Kinetic energy is present in every particle and moving object. Walking figures, flying balls, crumbs from tables, and charged particles in electric fields.
What three kinetic energies are there?Kinetic energy can be divided into three different subgroups: vibrational, rotation, and translational. Unsurprisingly, vibrating kinetic energy is produced when objects vibrate. Moving objects produce rotational kinetic energy, whereas items striking one another produce translational kinetic energy.
Does a falling apple from a tree have kinetic energy?An apple's energy of position, which is stored as gravitational potential, is transformed into kinetic energy, or energy of motion, as it falls from of the tree to the ground. Kinetic energy is converted to thermal energy when the apple strikes the ground.
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The human ear canal is, on average, 2.5cm long and aids in hearing by acting like a resonant cavity that is closed on one end and open on the other. The length of the ear canal is partially responsible for our sensitivities to certain frequencies. Use 340m/s for the speed of sound when performing the following calculations.a. What is the first resonant frequency?b. What is the wavelength at second resonance?
Answer:
To calculate the resonant frequency and the wavelength in the ear canal, the formulas for closed cavity resonances can be used:
a. First resonant frequency:
The resonant frequency f n can be calculated from the length l of the ear canal and the speed of sound v as follows:
fn = nv / 4l
where n is an integer representing the number of resonances. For the first resonance (n = 1), the resonant frequency can be calculated as:
f 1 = v / 4l = (340 m/s) / (4 * 2.5 cm) = 272,000 Hz
b. Wavelength at second resonance:
The wavelength λ of the resonant frequency can be calculated from the frequency and speed of sound:
λ = v/f
For the second resonance (n = 2), the resonant frequency is:
f 2 = 2v / 4l = 2 * 272,000 Hz = 544,000 Hz
and the wavelength can be calculated as:
λ 2 = v / f 2 = (340 m/s) / 544,000 Hz = 0.00063 m = 6.3 mm
These calculations are approximate and may vary depending on the shape and acoustic properties of the ear canal.
the scale above measures the mass of objects in grams. how much mass does the flower have? a. 6 grams b. 10 grams c. 4 grams d. 8 grams
A single stalk with a single, substantial, spherical head is what makes up a mass flower. They serve to give an arrangement more weight or mass.
How do you use a scale to measure mass in grams?Using balancing scales is one method of determining an object's mass. Place the item you would like to weigh with one side of a balance scale, then add g masses to the opposite side till the scales were level. Typically, masses for weighing are 1 g, 5 g, 10 g, or even more!
How much mass does a gram have?In the metric system, a grams is a unit of mass that is equal to one tenths (1 x 10-3) of a kg. The original definition of the gram was as the mass of one square millimeter of pure water around 4°C. the temp at which water has the highest density.
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what process does the sun use to generate heat and light?
the large planet has 9 times more mass than the small one. at which location is the gravitational field zero? in other words, at which location would the forces on a third object cancel each other, so that it would feel no net force?
Since the giant planet has nine times as much mass as the little one, its centre of mass would be located closer to the large planet.
At the two planets' centres of mass, the gravitational field is zero. A third item put near the centre of mass would not feel any net force because the gravitational pulls from each planet cancel each other out at that location. The masses of the two planets and their distances from one another both affect where the centre of mass is located. The giant planet would be closer to the centre of mass in this scenario since it has nine times the mass of the little planet. A body's mass is an inherent quality. Prior to the discovery of the atom and particle physics, it was widely considered to be tied to the amount of matter in a physical body.
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a heavy rainstorm dumps 1.0 cm of rain on a city 5 km wide and 7 km long in a 2-h period. how many metric tons (1 metric ton
The water dumped on the city by the heavy train is 350000 metric tons.
The heavy rainstorm dumps 1cm of rain on a city of dimensions 5km x 7km.
This happened in a period of 2 hours.
Now, the mass of the water can be calculated as,
Density = Mass/volume
Mass of the water on the city,
Density of water x volumr
Volume of the water collected,
Volume = 5000 x 7000 x 0.01
Volume = 350000m³.
We know the density of water is 1000 kg/m³.
Now, putting values,
Mass of water collected = 1000 x 350000
Mass of water in metric ton = 350000 metric tone.
So, the mass of the water is 350000 metric tons.
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consider an underdamped driven mass-spring oscillator. at what driving frequency are the driving force and the velocity oscillation approximately in phase?
The driving frequency for an underdamped mass-spring oscillator at which the driving force and velocity oscillation are approximately in phase is close to the natural frequency of the system. This frequency is when the system has the least amount of damping and therefore the highest resonant response.
How does the driving frequency affect the phase of the driving force and velocity oscillation?The driving frequency has a significant effect on the phase of the driving force and velocity oscillation in an underdamped mass-spring system. If the driving frequency is equal to the natural frequency of the system, the driving force and velocity oscillation are in phase, meaning they reach their maximum value at the same time. However, if the driving frequency is different from the natural frequency, the phase difference between the two oscillations increases, resulting in a phase lag or lead between the driving force and velocity oscillation. The magnitude of this phase difference depends on the damping coefficient and driving frequency, which affects the overall response of the system.
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how much minimum power output does a toy rocket need to maintain a constant upwards velocity of 4m/s
Answer:
The minimum power output required to maintain a constant upward velocity of 4 m/s for a toy rocket depends on various factors such as the weight of the rocket, air resistance, and acceleration due to gravity. Without specific information about the rocket, it is not possible to determine the minimum power output required.
the magnitude of a vector can be different in different coordinate systems.T/F
A vector cannot have a distinct direction in one coordinate system from another. Even if a vector's magnitude is not zero, it can still have a component value of zero.
What distinguishes coordinates from vector components?The unit vector of an axis and its scalar component along this axis are combined to create the vector component. The product of a vector's component vectors is a vector. When the coordinates of a vector's origin are deducted from its end point coordinates, the result is a difference in coordinates known as a scalar component.
Why does the vector not depend on the coordinate system?As opposed to a tuple of coordinates that describe a point, it is a vector. A coordinate system is fundamentally nothing more than a selected reference in the space we're working with. There are no changes to the object's or the space's properties if a different reference is used to describe its objects.
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removing energy from the system makes the system more stable, with the most stable point being the potential energy minimum. why is the system most stable at that point?
The system in its lowest energy state is stable unless externally forced.
Potential energy is energy that is stored in an object or substance, this is based on the position, arrangement or state of the object or substance.
Since the velocity is the maximum at the equilibrium or mean position, the kinetic energy also becomes the maximum. The kinetic energy decrease from the equilibrium position to the extreme position and becomes zero at the extreme position.
A stable position is not an equilibrium position. At a stable position, the kinetic energy is the maximum while the potential energy is the minimum since the potential energy is proportional to the square of the displacement from the equilibrium position.
The Potential Energy should be minimum when a system attains maximum stability.
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air masses flow from regions of high pressure to regions of?
Winds are produced as air masses move from high-pressure regions to low-pressure regions.
An explanation of pressure using examples:An easy way to demonstrate pressure is to push a knife against some fruit. If you push the flat part of the knife against the fruit, the covering won't be cut. The force is spread out across a large area (low pressure).
What does pressure actually mean?It's important to perform effectively under pressure since the consequences if you don't might be severe and devastating. It looks like a preservation crisis when a character, creative romance, your success, or indeed your safety appears to be in danger. If you are unable to distinguish between pressure and stress, you run the danger of becoming hurt.
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a scientist notes a pretty oil slick on the surface of a body of water. she aims her spectrometer at a spot on the oil slick to measure the wavelength that is being most strongly reflected. the oil index is 1.2, and she finds maximum reflection at a wavelength of 750 nm. what is the thickness of the oil layer in nm?
These thin films have a thickness that varies from 15 nm, or 1/30 the length of light waves, to 3000 nm, or 6 times the wavelength od visible light, or about 3 microns.
How do you gauge the thickness of oil?Microns (m), or one thousandth of a meter, are used to quantify the thickness of oil films in machinery. Figure 1 depicts a natural hair, that measures 70 to 100 m (0.003 to 0.004 inch) in length, under an electron microscope. The smallest object that a human can see is 40 m, or roughly the width of a hairs.
Which number has heavier oil?The oil is thicker the higher the number. The oil is thinner the lower the number. A grade of 5W-30, for instance, indicates that the oils has a velocity grade of 30 at 212°F, or 100°C, the typical working temperature of an engine.
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icy comets that were originally orbiting in the inner part of the solar system could have met which of several fates?
The correct option is D. Icy comets that were originally orbiting in the inner part of the solar system could have met All of the above of several fates.
The solar system is a collection of celestial bodies that orbit around a central star, the Sun. It includes the Sun, eight planets, dwarf planets, moons, asteroids, comets, and various other small objects.
The eight planets in our solar system, in order from the sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each planet has unique characteristics, such as size, atmosphere, and number of moons. The dwarf planets in our solar system include Ceres, Pluto, Haumea, and Makemake.
The solar system is thought to have formed about 4.6 billion years ago from a cloud of gas and dust that collapsed under its own gravity. Over time, the particles in this cloud began to stick together and form into larger objects, eventually forming the celestial bodies that make up the solar system today.
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Complete Question: -
Icy comets that were originally orbiting in the inner part of the solar system could have met which of several fates?
A. Collision with a planet or a plantesimal
B. The loss of their icy constituents due to volatilization
C. Being swept to the outer part of the solar system by a strong solar wind.
D. All of the above
bicyclist on an old bike (combined mass: 98 kg) is rolling down (no pedaling or braking) a hill of height 129 m. over the course of the 451 meters of downhill road, she encounters a constant friction force of 253 newton. if her speed at the top of the hill is 6 m/s, what is her speed at the bottom of the hill?
To calculate the speed of the bicyclist at the bottom of the hill, conservation of energy is used. The change in the bicyclist's gravitational potential energy can be calculated as:
ΔPE = mgh
where:
m = 98 kg (combined mass of the bike and the bicyclist)
g = 9.8 m/s^2 (acceleration due to gravity)
h = 129 m (height of the hill)
Then the initial kinetic energy can be calculated as:
KEi = 0.5 * m * v^2
where:
v = 6 m/s (initial speed)
After that final kinetic energy can be calculated as:
KEf = 0.5 * m * v^2
The work done by the friction force can be calculated as:
W = F * d
where:
F = 253 N (friction force)
d = 451 m (distance of the downhill road)
Therefore the net work done on the system can be calculated as:
Wnet = ΔPE + ΔKE
Substituting the values into the equation:
Wnet = mgh + KEi - KEf - W
0 = 98 kg * 9.8 m/s^2 * 129 m + 0.5 * 98 kg * 6^2 m^2/s^2 - 0.5 * 98 kg * v^2 - 253 N * 451 m
Solving for v, we get:
v = sqrt((2 * (98 kg * 9.8 m/s^2 * 129 m + 0.5 * 98 kg * 6^2 m^2/s^2) + 253 N * 451 m) / 98 kg)
v = 32.37 m/s
So, the speed of the bicyclist at the bottom of the hill is found to be 32.37 m/s.
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) when starting from rest, how long, in seconds, does it take the child to reach the bottom of the slide?
The child's acceleration is 4/9 m/s^2. To find the acceleration, we can use the equation: acceleration = change in velocity/time.
In this case, the child starts from rest, so their initial velocity is 0 m/s. We can use the final velocity and the time to find the acceleration.
First, we can find the final velocity of the child using the equation: final velocity = initial velocity + acceleration x time. Substituting 0 for initial velocity and 3 seconds for time, we get:
final velocity = 0 + acceleration x 3
Next, we can use the distance formula to find the final velocity, which is: final velocity = √(2 * acceleration * distance).
Setting these two equations equal to each other and solving for acceleration, we get:
acceleration = final velocity^2 / (2 * distance) = (2 * 2 / 3^2) = 4/9 m/s^2
So, the child's acceleration is 4/9 m/s^2.
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The correct question for the answer is
A child goes down a slide, starting from rest. If the length of the slide is 2 m and it takes the child 3 seconds to go down the slide, what is the child’s acceleration?
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f the charge on the particle is 13.3 mc and it takes 56.4 j of work to move the particle between a and b, what is the magnitude of the potential difference between points a and b?
The potential difference is 4.24 Volts between points a and b.
The amount of work done in carrying a charge is given by the product of the amount of charge and the potential difference.
Charge = 13.3 mC
Work done = 56.4 J
Potential difference is V.
The electric potential difference is the amount of work done required to move a unit electric charge from one point to another point.
Thus, the work done on the charge is given by,
W = Charge × V
56.4 = 13.3 mC × V
V = 4.24 Volts
The potential difference is 4.24 Volts.
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a bug on the surface of a pond is observed to move up and down a total vertical distance of 7.0 cm, from the lowest to the highest point, as a wave passes. if the ripples decrease to 5.0 cm, by what factor does the bug's maximum ke change?
At distance, maximum kinetic energy of the bug decreases by a factor of 7 / 10 when the ripples decrease from 7.0 cm to 5.0 cm.
The maximum kinetic energy of the bug depends on the height it reaches as a result of the wave.
Let's call the initial maximum height h1 and the final maximum height h2. The initial and final kinetic energy can be calculated using the formula for potential energy:
K1 = m * g * h1
K2 = m * g * h2
where m is the bug's mass, g is its gravitational acceleration (9.8 m/s2), and h1 and h2 are the heights it reached.
The ratio of the final kinetic energy to the initial kinetic energy can be used to compute the maximum kinetic energy changes as follows:
K2 / K1 = h2 / h1 = (m * g * h2) / (m * g * h1)
Once the ripples have shrunk to 5.0 cm and the bug has initially moved up and down a total vertical distance of 7.0 cm, we get:
h1 = 7.0 cm / 2 = 3.5 cm
h2 = 5.0 cm / 2 = 2.5 cm
Thus, the following is the variable by which the maximum kinetic energy changes:
2.5 cm / 3.5 cm / 7 / 10 = K2 / K1 = h2 / h1
So, the factor by which the maximum kinetic energy changes is:
K2 / K1 = h2 / h1 = 2.5 cm / 3.5 cm = 7 / 10
Therefore, the maximum kinetic energy of the bug decreases by a factor of 7 / 10 when the ripples decrease from 7.0 cm to 5.0 cm.
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you throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand? ignore air resistance.
The speed of the rock just before it reaches the water is 10.9 m/s.
Describe acceleration.In mechanics, acceleration is the rate at which the velocity of an object changes in relation to time. Acceleration is a vector quantity (in that they have magnitude and direction). The direction of an object's acceleration is determined by the direction of the net force acting on it. According to Newton's Second Law, the object's mass, which changes based on the materials it is built of, and the net balance of all external forces acting on it both contribute to an object's acceleration. The mass of an item has an inverse relationship with the magnitude of its acceleration.
The change in velocity of an object divided by the length of the interval gives its average acceleration over that time.
Proper acceleration, or the acceleration of a body relative to a free-fall scenario, is measured using a device called an accelerometer.
We can start by using the formula for vertical motion under constant acceleration:
h = ut + 0.5 × at²
where h is the vertical height, u is the initial velocity (zero in this case), t is the time, and a is the acceleration (9.8 m/ for gravity).
We can use this formula to find the time it takes for the rock to fall from the height of the bridge to the water:
h = ut + 0.5 × at²
0 = 0 × t + 0.5 × (-9.8) × t²
25 = -4.9 × t²
t² = 25 / -4.9
t = √(25 / -4.9)
t = √(5.1)
t = 2.28 s
Now that we know the time it takes for the rock to fall, we can use the formula for average velocity:
v = d / t
where d is the vertical distance and t is the time.
The distance is 25 m and the time is 2.28 s, so:
v = d / t
v = 25 / 2.28
v = 10.9 m/s
So the speed of the rock just before it reaches the water is 10.9 m/s.
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water molecules have a polarity which allows them to be electrically attracted. true or false
Calculate the force of gravity on a 55 kg person on the surface of the earth.
Answer:
550N
Explanation:
Force=Mass ×Acceleration
= 55kg×10m/s²
=550N
you stumble and accidentally toss your car keys horizontally at 50 m/s from a cliff that is 45 m high. how far from the base of the cliff should you look for your keys?
You stumble and accidentally toss the car keys horizontally at 50 m/s from a cliff that is 45 m high. The distance from the base of the cliff should you should look for the keys is 15 m.
The expression is given as :
h = ½gt²
Where,
h = height = 45 m
g = acceleration due to gravity
45 = ½ × 9.8 × t²
45 = 4.9 × t²
t² = 45 / 4.9
t = √(45 / 4.9)
t = 3 sec
Therefore the time is 3 sec.
The distance from the base of the cliff the key will be as :
s = u t
Where
u = 5.0 m/s
t = 3 sec
s = 5 × 3
s = 15 m
Thus, the distance is 15 m.
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a particular electric oven requires a potential difference of 220 v and draws 20.0 a of current when operating. how much does it cost to operate the oven for 6.50 hours?
For instance, a 20.0 a light bulb requiring 220 voltages AC will have a resistance of 144 ohms and consume 0.833 Amps.
Is baking an energy-intensive activity?It is true that using an electric oven raises your electricity costs significantly. To achieve the ideal temperature for baking, this large kitchen equipment uses an average of from 2000 to 3000 volts, or 2 to 3 kw per hour.
what is electric cost goes higher when you use the oven ??Furnaces are one of the most fuel appliances in your home, despite not being the most frequently used. In fact, your oven probably uses the most energy of any appliance in your kitchen, aside than your refrigerator which runs constantly.
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The same amount of water is poured into each of the containers shown below, and they are left uncovered in a warm room. After a day, which container will have the least amount of water left in it?
The container that would have the least volume is container B.
What is evaporation?Evaporation is the process by which a liquid changes into a vapor (a gaseous state) due to the conversion of its surface molecules to a gaseous state.
This occurs when the energy of the liquid's surface molecules exceeds the energy required for the molecules to escape from the liquid's surface into the air as a vapor.
The rate of evaporation is influenced by several factors, including temperature, wind speed, humidity, and the surface area of the liquid. For example, increasing the temperature of a liquid or exposing more of its surface area to the air will increase the rate of evaporation.
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how many millibars are equal to 27.23 inches of mercury
926.06 millibars are equal to 27.23 inches of mercury.
Is mercury a metal or a non-metal?Mercury (Hg) is a metal. It is a heavy, silvery-white metal that is a liquid at room temperature. Mercury is unique among the elements because it is the only metal that is a liquid at room temperature and standard pressure.
Is mercury toxic?Mercury is highly toxic and can cause severe health problems if ingested. Because of this, mercury is no longer widely used in everyday items, such as thermometers and batteries, and its use is being phased out in many industrial applications as well.
To convert inches of mercury to millibars, you can use the conversion factor of 1 millibar = 0.02952998751 inches of mercury.
To convert 27.23 inches of mercury to millibars, divide 27.23 by 0.02952998751:
27.23 inches of mercury / 0.02952998751 inches of mercury/millibar = 926.06 millibars.
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the tip of a tuning fork goes through 440 complete vibrations in 0.5 s. find the angular frequency and the period of motion.
The period of its motion is 1.136ms and the angular frequency is 5529.2 rad/s.
The frequency is 440/0.500 = 880 Hz.
a)
T = 1/f
T = 1/880
T = 1.136 ms
b)
[tex]\omega[/tex] = 2pi*f
[tex]\omega[/tex] = 2pi x 880
[tex]\omega[/tex] = 5529.2 rad/s
Frequency is a measure of the number of occurrences of a repeating event per unit of time. In physics, it is used to describe the number of complete cycles of a wave that occur in one second. It is often expressed in units of Hertz (Hz) which means cycles per second. For example, a frequency of 10 Hz means that there are 10 complete cycles of a wave occurring every second. The frequency of a wave is directly proportional to its wavelength and inversely proportional to its period, meaning that as frequency increases, wavelength decreases and period increases.
The frequency of a wave is also related to its energy, with higher frequency waves having more energy than lower frequency waves. This is why higher frequency electromagnetic waves, such as X-rays, are more dangerous to human health than lower frequency electromagnetic waves, such as radio waves. Frequency is an important concept in many areas of physics, including electromagnetic waves, sound waves, and light.
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Complete Question: -
The tip of a tuning fork goes through 440 complete vibrations in 0.500 s. Find (a) the period of its motion and (b) the angular frequency.
a far-sighted student has a near point of 358 cm. calculate the focal length of the glasses needed so the near point will be normal (25 cm). neglect the space between the eyes and the eye-glasses. answer in units of
Calculate the eyewear's focal length as an alternative. Specifically, "u Equal -20 cm, v Equal -25 cm, f =?" (1)/(f) (= (1)/(v) - (1)/(u) (= (1)/(-25) + (1)/(20) (= (-4 + 5)/(100) Equal (1)/(100) from where f = 100.
What is meant by hemineglect?Hemineglect is the inability to notice or respond to left-side objects, persons, and other stimuli. In severe cases, individuals will even disown or ignore their own left limbs.
50mm has what focal length?For instance, a 50mm lens will have a 50mm focal length when it is focused to infinity, but in order to concentrate on an object that is 1 meter away, the focal length must be shifted 2.6mm farther from the camera sensor. As a result, the image you initially thought was 50mm is actually 52mm.
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what conditions must exist for x-rays to be produced? 2. what are the basic parts of a cathode assembly? 3. what is the purpose of the focusing cup?
For x-rays, an electron source, a mechanism of accelerating the electrons to high speeds, and a target for the accelerated electron to contact with are required, and these are also components of the cathode assembly. The function of the focusing cap is to concentrate the electron beam.
To make x-rays, you need three things: an electron source, a way to accelerate the electrons to high speeds, and a target for the accelerated electron to contact with. X-rays are created when free electrons release energy when they contact with atomic particles in the target.
A cathode head, a filament, and first and second focusing tabs comprise the cathode assembly. The focusing caps are used to focus electron beams in the tube.
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Closed systems can exchange which of the following with the surroundings? A. Heat B. MatterC. Heat and MatterD. Neither heat nor matter Solution
Closed systems have the ability to interchange (c) heat and matter with their environment.
Explain what heat is.Heat is produced when kinetic energy moves within a material or an object, or when kinetic energy moves from an energy source to a material or an object. Such energy can be transported using three different mechanisms: radiation, conduction, and convection. a kind of energy that is transferred between objects as a result of a temperature difference; this energy is produced by the thermal movement of atoms and molecules.
What function does heat serve?Warming things up, boiling water, frying eggs, and melting metal for use in automotive manufacturing all involve the use of heat. The heat is transformed into electricity in a thermal power plant, which fuels our daily activities. Temperature is a unit used to describe how hot or cold something is. Extreme heat events can be fatal or harmful to health. As a result of these instances, more patients with heat-related illnesses as well as respiratory and cardiovascular disorders are being admitted to hospitals. Extreme heat events can result in a number of heat stress diseases, including heat stroke.
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what is the magnitude fad of the downward force on section a? express your answer in terms of the tension t1 .
In the theory of tension, F = T describes the strength of the downward force acting on section a. Tension is used to describe this.
What is being affected by the descending force?It is expressed as a Newton (N) or Kg m/s2 articulation. The centre of mass of the body is where the force of gravity passes through and always acts downward. Actually, the force of gravity is a type of pull that the earth applies to a body as it moves toward its centre.
Describe the tension force and how it works.The force communicated through a rope, string, or wire when two opposing forces draw on it is known as tension. The tension force draws energy equally on the bodies at the ends and is applied along the length of the wire.
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A circuit with a 9 V battery and two 6 Ω resistors in series. What is the current throughout the circuit?
Explanation:
The total resistance of the circuit is the sum of the individual resistances.The total resistance of the circuit is the sum of the individual resistances.R_total = R1 + R2 = 6 Ω + 6 Ω = 12 ΩThe total resistance of the circuit is the sum of the individual resistances.R_total = R1 + R2 = 6 Ω + 6 Ω = 12 ΩThe current through a circuit is equal to the voltage divided by the resistance.The total resistance of the circuit is the sum of the individual resistances.R_total = R1 + R2 = 6 Ω + 6 Ω = 12 ΩThe current through a circuit is equal to the voltage divided by the resistance.I = V / RThe total resistance of the circuit is the sum of the individual resistances.R_total = R1 + R2 = 6 Ω + 6 Ω = 12 ΩThe current through a circuit is equal to the voltage divided by the resistance.I = V / RI = 9 V / 12 Ω = 0.75 A.Answer: 0.75 amps
Explanation:
Current= Voltage/Resistance
9/(6+6) = 9/12
9/12= 0.75
how much work is done (by a battery, generator, or some other source of potential difference) in moving avogadro's number of electrons from an initial point where the electric potential is 5.10 v to a point where the electric potential is -8.00 v? (the potential in each case is measured relative to a common reference point.)
The potential difference or work done in bringing Avogadro number of electrons from an electric potential of 5.10 v to the electric potential of -8 v is 1.2 × 10⁶ J.
What is potential difference ?The potential difference of a charged body is the work done or energy to bring it from a point of certain potential to the other point in the electric field.
Given :
V i = 5.10 v
Vf = - 8 v
NA, (Avogadro’s number) =6.022×10²³ particles/mol
qe =−1.602×10⁻¹⁹ C
The work done in moving Avogadro's number of electrons through a potential difference ΔV is found using:
W=q NΔV
where q is the charge of one electron
W = −1.602×10⁻¹⁹ C × 6.022×10²³ × ( -8 - 5 V) = 1.2 × 10⁶ J.
Therefore, the work done in moving Avogadro's number of electrons from an initial point where the electric potential is 5.10 v to a point where the electric potential is -8.00 v is 1.2 × 10⁶ J.
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