A car covers a distance of 200m. If its velocity is 20 m/s², calculate the time taken.​

Air starts exerting more and more pressure on the walls of the syringe

What will happen to air particles when the are being compressed in a syringe?

Although the space has grown, the individual atoms and molecules can now go farther before running into a nearby atom or molecule because they can now bounce off the walls of the syringe instead of directly bouncing into one other.

Additionally, as the syringe is compressed, you are essentially cramming the same molecules into less space, which causes them to traverse shorter distances and collide more frequently.

This has to do with pressure because when molecules strike the syringe's walls, they bounce off, creating a force and response force that keeps the syringe's walls stiff against the environment it's in or the outside atmosphere. Atoms and molecules essentially bounce off the walls inside the syringe just as much as molecules outside the syringe do when the pressure inside and outside is equal. When the volume of the syringe is increased, the air molecules fill it up, which results in fewer impacts with the inner wall and less force holding the interior rigid to the exterior. Conversely, when the volume is decreased, the impacts happen more frequently because the molecules have nowhere else to go and no more space to travel before encountering another molecule or a wall, so the increase in the frequency of the impacts leads to an increase in the force holding the interior rigid to the exterior.

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Answer:

4:Hhhhghhhhhhhhhhhhhhhhhhhhhhhhhhhhh. 5:Bbbbbbbbbbbbbbbbbbbbb

The six blind men and elephant poem illustrates how observation is important to understand the subject and how scientific observations are affected by our own perspectives.

In the story, six blind men from Indostan were made to feel an elephant, but they could only touch one part of it like the tusk or the feet. As a result, each man's perception of what the elephant felt like varied. But since they had all felt the same elephant, all of their opinions were accurate.

In science, observation is vital. Scientists employ observation to gather and record facts, which enables them to create and then test their own hypotheses and ideas, just like in the poem where each individual came to his own conclusions. This is why it is common that different scientists reach different conclusions for the same experiment.

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It is false that asteroids were recently formed by the collision and breakup of an object orbiting in the asteroid belt.

Asteroids are stony objects that orbit the sun but are too tiny to be classified as planets. They're also referred to as planetoids or small planets. There are millions of asteroids that range in size from hundreds of kilometers to a few feet. The combined mass of all asteroids is less than that of Earth's moon.

The solar system's makeup is fairly uniform. The combined mass of the planets is substantially less than that of the Sun. The majority of comets have short periods and orbit near the ecliptic plane.

The asteroid belt is a torus-shaped area in the Solar System lying roughly between Jupiter and Mars' orbits. It is home to a large number of solid, irregularly shaped things of various sizes, but far smaller than planets, known as asteroids or minor planets. To distinguish it from other asteroid populations in the Solar System, such as near-Earth asteroids and Trojan asteroids, this asteroid belt is sometimes known as the major asteroid belt or main belt.

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In an atom of O-17, proton and electron is 8, and neutrons is 9.

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The average speed of this trip is 15.72 m/s

Given:

speed = S1 = 50.0 km/h

speed = S2 = 60.0 km/h

time taken to travel with speed S1 = 1/3

time taken to travel with speed S2 = 2/3

To Find:

average speed of this trip

Solution:

distance 1 = speed x time = 50*1000/3600 x 1/3

= 4.62 m

distance 2 = 60*1000/3600 x 2/3 = 11.1 m

Average speed = total distance/total time

= 4.62 + 11.1 / 1 = 15.72 m/s

Hence, average speed is 15.72 m/s

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The supply curve measures quantity supplied on the horizontal axis and price on the vertical axis.

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Answer:

30s

Explanation:

Q = charge in C(coulombs)

I = current in A(amps)

t = time in s(seconds)

Q = I × t

t = Q/I

Substitute in the given values.

t = 450C/15A = 30

t = 30s

Hope this helps! ^^

The heater was switched on for 30 seconds to allow 450 C of charge to flow through it.

To find the time the heater was switched on, we can use the equation Q = It,

where Q represents the total charge in coulombs, I is the current in amperes, and t is the time in seconds.

Given that the current (I) is 15 A and the total charge (Q) is 450 C, we can rearrange the equation to solve for time (t):

t = Q / I

Substitute the values:

t = 450 C / 15 A

t = 30 seconds

Therefore, the heater was switched on for 30 seconds to allow 450 C of charge to flow through it.

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The statement given "A chemical process with an e-factor of 1 creates less waste than an E-factor of 25" is True.

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Pluto is a planet in our solar system whose orbit brings it inside the orbit of another planet.

Numerous planets can be found in our solar system that Pluto is a member of. Pluto is a planet with an eccentric orbit that is highly oval in form and causes it to enter another orbit. It managed to enter Neptune's orbit. In comparison to Pluto, the dwarf planet, even Neptune can occasionally be far from the sun.

EThe events taking place on the planet are really unusual. In the years 1979 and 1999, it happens. Pluto, however, has never collided with Neptune. This occurs because Pluto only completes two of its three orbits around the sun, whereas Neptune completes three. This event stops two bodies from colliding.

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The jogger's acceleration is 0.558m/[tex]s^{2}[/tex]. 9.628 in [tex]m/hr^{2}[/tex] is the acceleration of jogger.

The rate at which an object's velocity with respect to time varies is referred to as acceleration in mechanics. The vector quantities are the accelerations (in that they have magnitude and direction). An object's acceleration is determined by the direction of the net force exerted on it.

According to Newton's Second Law, an object's acceleration is determined by a combination of two factors: the mass of the object and its mass, depending on the materials from which it is made. The magnitude of an object's acceleration is directly proportional to the net result of all external forces acting on the object.

The acceleration is measured in meters per second squared in the SI system.

For example, when a vehicle starts from standstill (zero velocity, in an inertial frame of reference) and travels in a straight line at increasing speeds, it is accelerating in the direction of travel. If vehicle turns, an acceleration occurs toward the new direction and changes its motion vector.

The acceleration of vehicle in its current direction of motion is called a linear (or tangential during circular motions) acceleration, the reaction to which the passengers on board experience as a force pushing them back into their seats. When changing direction, effecting acceleration is called radial (or centripetal during circular motions) acceleration, the reaction to which the passengers experience as a centrifugal force.

Jogger's acceleration = 0.558m/[tex]s^{2}[/tex]

1 hour= 3600s

acceleration in mi/[tex]hr^{2}[/tex]=( 0.558*3.28*[tex]\frac{1}{5280}[/tex])/ (1*[tex]\frac{1}{3600}[/tex])= 9.628m/hr[tex]^{2}[/tex]

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5.0E-6(0.000005) is the average rate of decomposition of a3 in the time interval 20-30 seconds.

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A defibrillator connected to a patient passes 16.0 a of current through the torso for 0.0200 s. A charge of 0.32C moves.

Defibrillator passes 16A through the torso of an individual

The time is 0.0200

The charge can be calculated as follows

= I × t

= 16 × 0.0200

= 0.32C

Defibrillators can also restart an abruptly stopped heart. The sole therapy for someone in cardiac arrest is defibrillation. Rapid defibrillation is essential for survival and one of the most important measures in saving a life from Sudden Cardiac Arrest because a person’s chances of survival decrease by 7–10% for each minute that they do not receive it.

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When the capacitor is fully charged, the potential difference across the capacitor is equal to the voltage source.

Capacitor is a device which stores charges. Charges come from the current passing through it.

The charges stored in a capacitor is called capacitance.

Its unit is farad (F)

No current flows in the circuit when a capacitor is fully charged because the potential difference across the capacitor is equal to the voltage source.

Here, the charging current will be zero such that capacitor voltage equal to source voltage.

When the capacitor is fully charged, the potential difference across the capacitor is equal to the voltage source.

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The earth could not be broken apart by the impactor since it was formed of such light material (mostly gas and liquid).

According to the Giant Impact Hypothesis, which is the most widely accepted theory for how the moon formed, the Earth and a Mars-sized object called Theia collided with each other as they were forming as protoplanets. The moon was created from a large amount of debris. According to this theory, the Moon was created after the Earth collided with a smaller planet that was around Mars' size. The Moon was created when the impact's leftover debris gathered in an orbit around Earth.

The larger body may have caught the iron core of the striking object.

The key to this theory is understanding how consciousness works and harnessing its power for good. By doing so, we can help to manifest positive changes in our world collectively.

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80 step it will take to stop under the same conditions if its initial velocity is 38 mi/h.

Speed is the directional speed of an item moving as a sign of its pace of progress ready as seen from a specific edge of reference and as estimated by a specific norm of time (for example 60 km/h northward). Speed is an essential idea in kinematics, the part of old-style mechanics that portrays the movement of bodies. Velocity is characterized as the pace of progress of position concerning time, which may likewise be alluded to as the immediate speed to stress the qualification from the typical speed. In certain applications the typical speed of an item may be required, in other words, the steady speed that would give a similar resultant relocation as a variable speed.

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Electrical insulating gloves marked with a yellow label have a maximum use voltage level of 17000 V.

Electric current cannot readily travel through an electrical. Due to their closely bonded state, the insulator's atoms' electrons are immobile. Electric current can flow through other materials more easily, such as semiconductors and conductors. Insulators have higher resistivities than semiconductors or conductors, which makes them stand out from other materials. Non-metallic are the most typical examples.

Since even insulators contain minute amounts of mobile charges (charge carriers) that can carry current, a perfect insulator does not exist. A sufficiently high voltage is supplied to cause the electric field to pull electrons from atoms, which causes all insulators to turn electrically conductive. An insulator's breakdown voltage is what this is.

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Stack temperatures typically range from 350 to 450 degrees Fahrenheit. A 2.5% efficiency loss occurs for every 100 degrees over that temperature. The majority of buildings schedule annual boiler cleanings at regular intervals, but if you see those figures rise, it's time for a cleaning.

Excess air is required to completely burn the fuel since the air and fuel cannot combine exactly in a burner. Additionally, any leaks in the heater will draw air into the firebox that doesn't pass through the burners since the furnace or boiler firebox operates at a little negative gauge pressure. Fuels that are gaseous, like natural gas, burn more readily than fuels that are liquid or solid. Depending on the fuel type, different surplus air requirements will apply.

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The rate at which F is decreasing is 0.12 mol / L s

Given that,

2 D(g) + 3 E(g) + F(g) → 2 G(g) + H(g)

Rate of reaction = - ΔD / 2 Δt = - ΔE / 3 Δt = - ΔF / Δt = ΔG / 2 Δt = ΔH / Δt

Given that,

- ΔE / Δt = 0.36 mol / L s

- ΔE / 3 Δt = - ΔF / Δt

- 0.36 / 3 = - ΔF / Δt

- ΔF / Δt = - 0.12 mol / L s

The rate of reaction is the measure of how quickly or slowly that a reaction proceeds.

Therefore, the rate at which F is decreasing is 0.12 mol / L s

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Answer:

Ernest Rutherford observed that particles with a positive charge deflected when passing through a thin sheet of gold foil, concluding that the atom's positive part is small and dense.

Explanation:

The Ernest Rutherford experiment describes planetary model of an atom. According to the model, an atom has a tiny, compact, positively charged centre called a nucleus, where almost all of the mass is concentrated, while light, negatively charged particles called electrons orbit far around it, much like planets orbit the Sun. In his experiment, the observation that a positive charge is deflected through a thin sheet of gold foil led to the conclusion that the deflection some of the positive charge occurs in a small region of the atom. At the same time, the majority passed through the atom (which was also concluded to be empty space).

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The star having wavelength 1872nm is moving toward the earth.

It happens due to the phenomena of Doppler shift. Doppler effect, commonly known as Doppler shift and it is defined as The change is the wavelength or frequency of  waves as a result of an observer's motion In relation to the web source.

In visible light it is possible to see the apparent wavelength emitted by stars and galaxies. As a result, a start moving towards the earth appears to emit light with a the short wavelength.

Then the light shows that is static. It is known as blue shift because here spectrum is shifted towards the blue end due to the shortest wavelength.

And when a start goes away from us, it appears that it shifts It's light towards longer wavelength.

This end is referred as redshift because it is closer to the red end of the spectrum.

Add the spectrum of a particular star. Shown that the line appearing at the shortest wavelength is 1872nm in comparison to the laboratory measurement. This shows the same hydrogen line at a greater wavelength 1875.nm results that star is moving towards the Earth.

The star having wavelength 1872nm is moving toward the earth.

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The correct option is (a)the evening star.

Venus is sometimes called the evening star.

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The equation for triangular wave with period 6 and amplitude 10 is -

[tex]$y=\frac{40}{6} |(x -\frac{6}{4})\;mod\;6)-\frac{6}{2}| - 10[/tex].

We have a triangular waveform.

We have to determine the equation representing this triangular waveform.

A waveform is a graphical representation of the shape of a wave that indicates its characteristics such as frequency and amplitude.

According to the question, we have -

Time Period = 6

Minimum value = 0

Maximum value = 10

Therefore -

Range → R ∈ [0, 10]

Amplitude = Max. value - Min. value = 10 - 0 = 10

The general equation for a triangle wave with amplitude 'a' and period 'p'  is given by →

[tex]$y=\frac{4a}{p} |(x -\frac{p}{4})\;mod\;p)-\frac{p}{2}| - a[/tex]

Now -

a = 10

p = 6

Substituting values -

[tex]$y=\frac{40}{6} |(x -\frac{6}{4})\;mod\;6)-\frac{6}{2}| - 10[/tex]

Hence, the equation for triangular wave with period 6 and amplitude 10 is -

[tex]$y=\frac{40}{6} |(x -\frac{6}{4})\;mod\;6)-\frac{6}{2}| - 10[/tex]

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Explanation:

two strings fire sticks water

Answer: i would bring a flashlight, cans of food , water filter, swiss army knife, rope, and a radio

Explanation:

Answer:

(a) At U = 3, 9 , v = 4, 2, the projection of u onto v is w1=<2,8>

(b)At U = 3, 9 , v = 4, 2,  the vector component of u orthogonal to v is w2 = <4,-1>

Explanation:

A

The projection of u onto v is given by:

w1= projvu = (u⋅v||v||2)v

Given that  u= <6,7> and v=<1,4>, we can find the projection of u onto v as shown below:

w1= projvu = (u⋅v||v||2v=(<6,7>⋅<1,4><1,4>⋅<1,)

=(6⋅1+7⋅41⋅1+4⋅4)<1,4>

=3417<1,4>

=<2,8>

Part B

The vector component of u orthogonal to v is given by:

Using the given vectors and the projection found in part (a), we can find the vector component of u orthogonal to v as shown below:

w2=u−projvu

=<6,7≻<2,8>

=<(6−2),(7−8)>

=<4,−1>

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22 days from now the star Betelgeuse, of the constellation Orion will rise at 11:40 pm

Given that,

Time at which the star rises today = 1:12 am

The stars rise about 4 minutes earlier each night

Minutes earlier it will rise 22 days from now = 4 * 22 = 88 minutes

= 1 Hr 28 Min

The star should rise 1 Hr 28 Min earlier from 1:12 am which is 11:44 pm

But since the time from today to 22 days from now crosses the 12 am mark, the star will be seen twice on the same day. This means that the star seen on 11:44 pm is actually on the 21st day. On 22nd day the star is seen 4 minutes earlier than 11 pm which is 11:40 pm.

We rotate one degree every 4 minutes. We revolve a little more than 1 degree every day around the sun (365 days divided by 360 degrees is 1.014 degrees). So everyday we get to see the star 4 minutes early which is 1 degree.

Therefore, 22 days from now the star Betelgeuse, of the constellation Orion will rise at 11:40 pm

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Under ground fault conditions, an effective ground path will carry current from the point of a ground fault to electrical supply source

The effective ground path is a low impedance electrically conductive path constructed intentionally to carry current under ground fault conditions. It helps remove dangerous voltage from a ground fault and facilitates overcurrent protective device operation.

Ground fault is a type of short-circuit in which the electricity takes an unplanned path to the ground. It is caused by wrong wiring or damaged insulation / appliance.

Therefore, under ground fault conditions, an effective ground path will carry current from the point of a ground fault to electrical supply source

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Answer:

1.82 seconds

Explanation:

∆ y = 1/2at^2 + Vi*t
a is acceleration, y is height, and Vi is initial velocity
30.6 = 1/2*9.8*t^2 + 7.95 * t
simplify and rearrange
4.9t^2 + 7.95t - 30.6 = 0
solve the quadratic
t = 1.816128... and a negative number, but since this is physics, in this case time can't be negative
Round to 3 significant figures
t = 1.82

The maximum speed by which a ball is thrown vertically upward is 34.1255 ft/sec.  as the height in the given data is 18.1 ft.

In physics, vertical launch upward may be characterized as the motion that is illustrated by an object that has been set afloat vertically upwards in which the height and the consequences of the earth's gravitational force set in motion of an object are taken into consideration.

According to the question,

The formula for the vertical launch upward may be as follows:

where v₀ = initial velocity

           g = gravity max = maximum height.

We know that,

g = 32.17 ft/s²

On applying the formula of maximum speed and clearing the initial velocity we get:

y max = v₀²/(2*g)

v₀ = √(y max * (2*g)

v₀ = √( 18.1 ft * (2 * 32.17 ft/s²)

v₀ = √( 18.1 ft * 64.34 ft/s²)

v₀ = √1164.554 ft²/s²v₀ = 34.1255 ft/sec.

Therefore, the maximum speed by which a ball is thrown vertically upward is 34.1255 ft/sec.  as the height in the given data is 18.1 ft.

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When the Earth's magnetic field reverses, a new stripe, with the new polarity, begins. Such magnetic patterns led to recognition of the occurrence of sea-floor spreading, and they remain some of the strongest evidence for the theory of plate tectonics.

The specific magnetism of basalt rock is determined by the Earth's magnetic field when the magma is cooling. Scientists determined that the same process formed the perfectly symmetrical stripes on both side of a mid-ocean ridge. The continual process of seafloor spreading separated the stripes in an orderly pattern

With this information, we can conclude that A polarity reversal means that the magnetic North flips to where we know the South Pole is. At the mid-ocean ridge spreading axis.

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