a 20m-long metal rod has a radius of 1.0 cm and a resistance of 3.2 x 10-5 ohms. what is the resistivity of the metal?

With an automobile as for any other object, the formula for distance and speed is distance time. The calculation uses (60 x 5280) (60 x 60) Equals 88 ft per second to get a car's speed at 60 miles per hour.

You divided 1 by the frequencies to determine the time interval for a known frequency (e.g., a speed of 100 Hz does have a timer of 1/(100 Hz) => 0.01 s; 500 Hz has a timer of 1/(500Hz) = 0.002 secs, etc.).

There are two categories of interval types: daytime intervals and year-month intervals. A day-time intervals can describe a span of days, hour, minutes, milliseconds, and fraction of a second, whereas a year-month intervals can indicate a range of years and months.

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The process of conduction takes place only in solids. It does not happen in liquids and gases. Heat is transferred through fluids by the process of convection. Infrared radiation transfers energy as a wave: it can travel through a vacuum.

It is the transfer of heat or electricity through a material without any physical movement of the material itself.

Conduction happens in solids, liquids, and gases, but solids are more effective at it.

The material's thermal conductivity affects how quickly heat transfers through it.

The gradient in temperature or the difference in electrical potential determines how much heat or electricity may go through a substance.

The transfer of heat or electricity through a material can be influenced by various factors, such as the type of material, its thickness, temperature, pressure, and electromagnetic fields.

Conductors are materials that allow heat or electricity to flow through them with ease, whereas insulators impede the flow of heat or electricity.

Conduction is a key factor in various industrial and technological applications, including heating and cooling systems, electrical power generation and distribution, and telecommunications.

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The conventional units for length are meters, grams, liters, and degrees Celsius for temperature.

Temperature is a measure of how much an object's ions' particle power rises. These particles move at an increased speed when the temperature rises. To measure the temperature, use a thermometer or a calorimeter.

Physics' study of heat and temperature is known as thermodynamics. The laws of thermodynamics regulate the flow of energy throughout the cosmos. They are investigated throughout a wide range of technical and scientific fields, including as chemistry, geology, and meteorology.

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The equation that expresses your height as a function of elapsed time h = 30 * cos(2 * π * t / 40) + 31

The height of a person on a Ferris wheel can be modeled using the equation of a circle, where the height (h) is a function of the elapsed time (t) and the radius of the Ferris wheel (r). The center of the Ferris wheel is 31 m above the ground, so we can add this value to the height to get the height above the ground.

The formula for the height (h) of a point on the circumference of a circle is given:

h = r * cos(θ),

where θ is the angle formed by the radius and the vertical at that point. In this case, we can express θ as a function of time:

θ = 2 * π * t / T,

Where T is the time it takes to complete one full rotation of the Ferris wheel, which is 40 s in this case.

Substituting this expression for θ into the equation for h:

h = r * cos(2 * π * t / T),

and using r = 30 m, we get:

h = 30 * cos(2 * π * t / 40).

Finally, adding the height of the center of the Ferris wheel above the ground, 31 m:

h = 30 * cos(2 * π * t / 40) + 31

So this is the equation that expresses your height on the Ferris wheel as a function of elapsed time.

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The following statements which is not true about electric fields produced by charged objects is that it is generated by a negative point charge points toward the charge, but the field generated by a uniformly charged flat surface with net negative charge points away from the surface which is denoted as option B.

This is referred to as a region around a charged particle or object within which a force would be exerted on other charged particles or objects.

Electric field can be generated through a charged body which could be positive or negative which makes option B incorrect.

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As can be shown, mass has no bearing on an object's centripetal acceleration; as a result, the centripetal acceleration is unaffected by changes in mass.

The rate at which velocity changes is known as acceleration. Acceleration typically indicates that the speed was changing, but not necessarily. An item that is moving in a circle while maintaining a constant speed is still accelerating because of direction of its motion is shifting.

An object's velocity may alter depending on whether it is moving faster, slower, or in a different direction. A falling apple, the sun orbiting the earth, or a car stopped at a stop sign are a few instances of acceleration.

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The curve B show the speed of an object that is beginning to experience significant air resistance.

By definition, air resistance describes a force that opposes the relative motion of an object as it passes through air. This attractive force acts opposite to the speed of the oncoming stream, thereby slowing the object down.

Unlike other resistance forces, drag depends directly on velocity, as it is a component of the net aerodynamic force acting in the opposite direction of motion.

Air resistance is usually calculated using the "equation of gravity", which determines the force experienced by an object moving through a liquid or gas at a relatively large speed.

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Answer: Babies inherit their eye color through the combination of genes they receive from their parents. Genes, which are located on chromosomes, determine a specific trait, such as eye color. Each gene has two alleles, one from each parent, and the dominant allele will determine the phenotype, or the observable physical characteristics, of the trait. If a baby inherits a dominant allele for brown eyes and a recessive allele for blue eyes, the brown allele will be expressed, resulting in brown eyes. The combination of alleles a baby inherits is called their genotype. If a baby inherits two identical alleles for a trait, they are said to be homozygous for that trait, while if they inherit two different alleles, they are heterozygous. The dominant allele is expressed over the recessive allele in heterozygous individuals, resulting in a phenotype that reflects the dominant allele.

Explanation:

The possible values of the velocity vector x component are - 20.71 m/s or 20.71 m/s.

Velocity is a vector quantity so it can be described in x components and y components.

Look at the picture. At quadrant III

At quadrant IV

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Answer:

i think it is Joules (J).

... any unit of energy.

A few good ones:

... Joules

... Calories

... Ergs

... Newton-meters

... Dyne-centimeters

When waves spread out when they pass through a hole or past the edge of a barrier, this is called diffraction.

An interruption that moves momentum and energy from one place in a medium to another is known as a wave. For instance, we can observe the movement of the wave crest from one side to the other in a specific amount of time as an ocean wave moves in medium water.

Most often, wind is what produces waves. The rubbing together of wind and surface water produces wind-driven waves, also known as surface waves. A wave crest is produced when wind continuously disturbs the ocean or lake's surface while it blows across it.

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Scientists and their discoveries:

Electromagnetic induction is the process by which an electromotive force is induced in a conductor by a changing magnetic field. This phenomenon was discovered by Michael Faraday in the early 19th century and is the basis of many important electrical technologies, such as transformers, generators, and motors.

Electromagnetic induction works by inducing a current in a conductor as a magnetic field around it changes. This can be achieved through relative motion between the conductor and the magnetic field, or by changing the strength of the magnetic field itself.

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A car's length would be expressed in meters.

Everything from the length of a ruler to the spacing between objects in a room is measured in meters. Most common domestic items, such tables, rooms, window frames, television screens, etc., would be measured in meters. Long distances in kilometers are measured.

A metric kilometers is shorter than a mile, an imperial unit of measurement. The term "kilometers" can be shortened because it is a unit of measurement equal to 0.62 miles and 1.61 kilometers. km is the abbreviation for a kilometers.

For measuring length or distance, the metric system uses kilometers. A kilometre is an equivalent unit of measurement to 1,000 metres because the Greek prefix kilo- means "one thousand" in English. The unit of measurement for lengthy distances that is most frequently used is the kilometre. One thousand is a big number. The term "kilometre" can be condensed, just like other terms for units of measurement. A kilometre is represented by the abbreviation km.

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If a grape and a grapefruit are dropped at the same time and have no air resistance or other forces acting on them, they would fall to the ground at the same acceleration due to gravity, which is 9.8 m/s^2.

Since they are both under the influence of the same gravitational force, they would fall at the same rate, regardless of their mass or size. This means that the time it takes for each of them to fall to the ground would be the same, and their final velocity just before impact would also be the same. The only difference between them would be their initial position and their height at any given time during the fall.

The law of gravity states that all objects near the surface of the earth fall at the same rate, regardless of their mass or size. This means that the acceleration due to gravity, which is denoted by "g" and has a value of approximately 9.8 m/s^2, is the same for all objects.

When a grape and a grapefruit are dropped at the same time with no air resistance or other forces acting on them, they are both subject to the same gravitational force, and will therefore fall at the same rate. This means that they will have the same acceleration and will experience the same change in velocity over time.

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The new variable vb is the speed at the bottom of the window, defined by vb = Lw/t + gt/2.

In the problem instead of using LW,

Let us use L alone. h is the height from the bottom of the window to the position where from which the pot was dropped

L = (Vb)t - 0.5gt^2 or (Vb) = (L/t) + 0.5gt

Also (Vb) ^2 =2gh,

Hence 2gh = [(L/t) + 0.5gt] ^2 h = [(L/t) + 0.5gt] ^2/ 2g.

This is the needed equation. This can be modified as

h = (L^2/2gt^2) + (L/2) + (gt^2/8)

b) V-ground^2 - Vb^2 = 2g Hb

V-ground^2 = 2g (h_ total)

= 2g Hb + Vb^2 2g ( h_ total)

= 2g Hb + Vb^2 ( h_ total) = Hb + Vb^2/2g

c) From 1 (Vb)

= (L/t) + 0.5gt

The bottom of the window is at a height Hb above the ground

V-ground^2 - Vb^2

= 2g Hb V-ground^2

= 2g Hb + Vb^2

Substituting for Vb, we get the required equation.

The speed of an item is the significance of the exchange of its role over time or the magnitude of the change of its function in step with a unit of time; it's far thus a scalar amount. The common velocity of an item in an interval of time is the gap traveled with the aid of the object divided via the period of the interval the immediate speed is the restriction of the common velocity as the duration of the time techniques 0. pace isn't similar to speed.

Speed has the size of distance divided by means of time. The SI unit of pace is the meter according to second (m/s), however, the most commonplace unit of speed in everyday utilization is the kilometer in keeping with the hour (km/h) or, inside the US and the UK, miles in line with the hour (mph). For air and marine tours, the knot is commonly used.

The fastest viable pace at which power or information can tour, according to important relativity, is the velocity of mild in vacuum c = 299792458 meters per 2d (about 1079000000 km/h or 671000000 mph). depend can not pretty reach the velocity of light, as this will require an infinite amount of energy. In relativity physics, the idea of rapidity replaces the classical idea of pace.

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The energy-efficient energy conversion device is a generator, one of the following.

Utilizing the formula below, efficiency may be represented as a ratio: Input > Output. The total quantity of beneficial work accomplished, excluding waste and spoilage, is known as output or work output. Efficiency may also be expressed in percent by dividing the ratios by 100.

Energy is squandered less when a machine is more effective. For instance, a heat engine would be considered 75% efficient if it could convert 75% of the gasoline it received into motion while only losing 25% of it as heat.

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The time taken by the sled to come to a stop after the rocket turns off is calculated to be 6.93 s.

Generally the velocity attained by the sled after t = 2.7 s is mathematically evaluated using the kinematic equation as follows,

v = u + a t

As, u = 0, a = 14.5 m/s²

v = 0 + 14.5 (2.7) = 39.15 m/s

s is the distance it covers in this time.

s = u t + 1/2 a t² = 1/2 × 14.5 × 2.7² = 52.85 m

Now, when sled stops its the final velocity is v f = 0, while the initial velocity will be the velocity after its acceleration i.e, v = 39.15 m/s.

So, v f = v + a₁ t₁

-39.15 = 2.7 a₁

a₁ = -14.5 m/s²

As a₁ is negative, it is said to be deceleration.

0 = 39.15 - 5.65 t₁

5.65 t₁ = 39.15

t₁ = 6.93 s

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Answer:

30m/s

Explanation:

given : 108 km/hr

1km/hr = (1000/3600) m/sec

    = 5/18 m/sec

108km/hr  = 108 * 5/18 m/sec

         = 30 m/sec

The quantities that are unknown final separation of the particles and initial speed of the protoninitial speed of the alpha particlefinal speed of the protonfinal speed of the alpha particles.

Alpha particles are positively charged particles consisting of two protons and two neutrons. They are the heaviest and most energetic of the common types of radiation emitted by radioactive materials. Alpha particles can be emitted by the decay of heavy elements such as uranium, radium, and plutonium. T

hey are relatively large and heavy, which means that they have a short range and are easily stopped by even thin materials such as paper or human skin. However, they can be dangerous if they are inhaled or ingested, as they can cause damage to living tissue and increase the risk of cancer

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The amount of force which is required to be applied on an object to displace it is 1100 Newtons.

Work done can be defined as the force applied to move an object, it should be transferred to the energy of an object. Transferring the energy to an object can be in the method of force.

Work done = effort force × effort arm × cosθ

where, theta is the angle between the effort arm and the load arm. Since the angle is not given, we can assume it to be 90 degrees.

We know that the work done is 400 joules, the effort arm is 10 meters, and the load arm is 2 meters.

We can substitute these values into the equation:

400 = Feffort × 10 × cos(90)

The cosine of 90 is zero.

So, Feffort = 400/0 = undefined

To find the force applied, we can use the principle of the mechanical advantage of the lever.

MA = load arm/effort arm = 2/10 = 1/5

Feffort = Fload / MA = 220 N / (1/5) = 1100 N

Therefore, the force applied must have been 1100 Newtons.

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By observing from the equator, you can see all of the stars in the sky at different times of the year, as the earth's rotation and orbit allow you to see different parts of the sky throughout the year.

The equator is an imaginary line that circles the earth, dividing it into two hemispheres: the northern hemisphere and the southern hemisphere. It is the line of zero degrees latitude and is located approximately at 0.00°N latitude. It is about 40,075 kilometers long and is the only line of latitude that is equidistant from both the North Pole and the South Pole. The equator passes through 13 countries including Ecuador, Colombia, Brazil, Congo, and Kenya.

The equator has a unique climate, as it is located in the tropics and receives more direct sunlight than any other part of the earth. This results in a hot and humid climate, with temperatures averaging around 27°C. The equator also experiences frequent rain, with high rainfall levels, particularly in the Amazon Basin. The equator is home to a diverse range of plant and animal life, including tropical rainforests, which are some of the richest and most diverse ecosystems on the planet.

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It takes 412 years, for sunlight to melt the ice if the ice absorbs an average of 113 w/m2, 12.0 hours per day,

The volume of the given ice cuboid:

Volume = l x w x t

Volume = (160 x 10³) (40 x 10³)(250)

Volume = 16 x 10¹¹ m³

Since the density of ice is 917 kg/m³. So, the total mass of the given cuboid is:

Mass = volume x density

Mass = (16 x 10¹¹ x 917) kg

Mass = (16 x 10¹⁴ x 917) g

Since the latent heat of ice is 334 J/g

So, the energy required to melt the ice:

Q = mass x heat latent

Q = (16 x 10¹⁴ x 917) (334)

Q = 49 x 10²⁰ J

So, to melt ice is:

t = Q/(A×Pₐ)

t = (49 × 10²⁰)/(6,4× 10⁹  × 113)

t = 0.67 × 10¹¹ seconds

t = (6.7 × 10¹⁰)/3600

t = (1.8 x 10⁷)

t = 18000000 hour

If it absorbs energy from the sun for 12 hours per day,

18000000 hours = (18000000/12) days

                             = 150000 days.

  If 365 days = 1 years

150000 days = (150000/364) days

                      = 412 years.

The sun takes 412 years to melt the ice.

Your question is incomplete but most probably your full question was:

In 1986, a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, 40.0 km wide, and 250 m thick. How many years would it take sunlight alone to melt ice this thick, if the ice absorbs an average of 113 W/m? 12.00 h per day?

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The collision frequency is k = Ae^(-Ea/RT) in terms of Arrhenius equation. It stands for how frequently reactant molecules successfully collide. It varies in direct proportion to both the frequency and concentration of molecular collisions in the reaction.

The minimal amount of energy that the reactants require to generate a product during a chemical reaction is known as the activation energy and was first used by Arrhenius. All molecules with energies greater than or equal to the activation energy will collide and produce products, according to the Arrhenius Equation.

The rate at which two atomic or molecular species collide in a given volume during a given period of time is known as the collision frequency.

Specifically for gases, the collision hypothesis is used to forecast the rates of chemical methods. The collision theory is predicated on the idea that in order for a reaction to happen, the reactive components (atoms or molecules) must come into contact with one another or collide.

k = Ae^(-Ea/RT)

Where:

k = rate constant of the reaction,

A = pre-exponential factor

e = base of the natural logarithm,

Ea = activation energy of the reaction,

R = gas constant, and

T = temperature in Kelvin

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The speed of the object is   4/3 cm/second.

Speed is distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity With SI unit meter/second.

According to the graph:

Initial position (at t = 0 second) of the object is = 0 cm.

At t = 12 second, position of the object is = 16 cm.

As the graph is linear;

the speed of the object is =  (16-0)/(12 -0) cm/second

= 4/3 cm/second.

Hence, the speed of the object is   4/3 cm/second, that is, 1.33  cm/second.

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The amount of work required to haul up the rope is 30.72 Nm. This can be calculated by multiplying the weight of the rope (0.624 N/m) by the length of the rope (50 m).

The work required to haul up the 50 m length of rope weighing 0.624 N/m is 30.72 Nm. This can be found by using the equation Work = Force x Distance.

The force is the weight of the rope, which is 0.624 N/m, and the distance is the length of the rope, which is 50 m. When multiplied together, the resulting work is 30.72 Nm.

Hauling the rope up will therefore require an expenditure of energy equal to 30.72 Nm.

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In order of the degree of wind erosion now occurring on their surfaces, Earth, Venus, Mars, Moon, and Mercury are the planets.

The MESSENGER mission discovered that Mercury has several distinctive landforms, more level plains, and surface chemistry that are unlike those that have been observed on the Moon (low in iron and rich in sulfur).

With wind speeds as high as 1600 kilometers an hour, significantly higher than those seen in Jupiter's atmosphere, Saturn also the "windiest" planet. Major components of Saturn include hydrogen and helium.

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Click Variables on the Designer panel to start. It shows the Variables panel. Enter the name and click the Create Variable line. There is a new variable made.

Drag an activity to the Designer panel from the Activities panel. Create a variable by selecting it from the context menu when you right-click a field or by pressing Ctrl+K. It shows the Set Var field. Enter after entering the name. The created variable is present in the field. In UiPath, there are three ways to generate variables: Open the Variables panel, choose the 'Create new Variable' option, and then fill out the fields as necessary. Give its name in the desired Properties field or Designer panel as necessary.

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Explanation:

If the particles of different densities were dropped at the same time from a boat into still water, they would sink or float based on their individual densities. If the denser particles are heavier, they will sink faster than the less dense particles. The less dense particles will float to the surface.