# In 2.0 minutes, a ski lift raises 3 skiers at constant

Get college assignment help at uniessay writers In 2.0 minutes, a ski lift raises 3 skiers at constant speed to a height of 175 m. The average mass of each skier is 65 kg. What is the average power provided by the tension in the cable pulling the lift?

## The figure showed a thin rod of length L and charge

The figure showed a thin rod of length L and charge Q. Find an expression for the electric potential a distance z away from the center of rod on the line that bisects the rod.

## If the height of the water slide in the figure is

If the height of the water slide in the figure is h = 3.6 , and the person’s initial speed at point A is 0.70 , what is the horizontal distance between the base of the slide and the splashdown point of the person?

## A one-turn coil of wire of area 0.20 meter sequer and

A one-turn coil of wire of area 0.20 meter sequer and resistance 0.25 ohm is in a magnetic fieldthat varies with time as shown in figure.the magnetic flux throug the coil at t =0 is as shown figure. (a) When is the induced current the lagest? (b) When is it zero? (c) Is the indused current alwayes in the same direction ? (d) Find the direction (clockwise or counterclockwise) and magnitude of the current between times t=0 and t=2s,between t=2 and t=4 and between t=4 and t=6

## four identical masses of 800 kg each are placed at the

four identical masses of 800 kg each are placed at the corners of a square whose side length is 10.0 cm. What is the net gravitational force on one of the masses, due to the other three?

## Find the shear strain that results if a force of magnitude

Find the shear strain that results if a force of magnitude 1.20×106 is applied to the top square face of the plate, parallel to the side, and a force of equal magnitude is applied in the opposite direction to the bottom face of the plate as shown . Note that the shear modulus of steel in pascals is 7.50×1010 .

## An 8.00 g bullet is fired into a 170 g block

An 8.00 g bullet is fired into a 170 g block that is initially at rest at the edge of a table of 1.00 m height (Fig. P6.30). The bullet remains in the block, and after the impact the block lands d = 2.1 m from the bottom of the table. Determine the initial speed of the bullet.

## 20.30c:If the maximum power allowed by the device (before it is

20.30c:If the maximum power allowed by the device (before it is destroyed) is 270W , what is the maximum input current to this transformer?

## 20.3: A circular loop (radius of 20cm ) is in a

20.3: A circular loop (radius of 20cm ) is in a uniform magnetic field of 0.17T .

## 20.47: What is its efficiency?

20.47: What is its efficiency?

## Estimate the angle of separation for the following: a. The first

Get college assignment help at uniessay writers Estimate the angle of separation for the following: a. The first star on the handle of the Big Dipper and the star that forms the far bottom edge of the bowl(Merak). b. The last star in the bowl of the Big Dipper(Dubhe) and the North Star (Polaris).

## A railroad handcar is moving along straight, frictionless tracks with negligible

A railroad handcar is moving along straight, frictionless tracks with negligible air resistance. In the following cases, the car initially has a total mass (car and contents) of 200 and is traveling east with a velocity of magnitude 5.30 . Find the final velocity of the car in each case, assuming that the handcar does not leave the tracks.

## A force is applied to a 1 kg mass and produces

A force is applied to a 1 kg mass and produces 4.2 m/s2 acceleration. What acceleration would be produced by the same force applied to a 13.7 kg mass? Answer in units of m/s2.

## A 23- bullet traveling 265 penetrates a 3.4 block of wood

A 23- bullet traveling 265 penetrates a 3.4 block of wood and emerges cleanly at 185 . If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?

## AC note (f = 256 Hz) is sounded on a piano.

AC note (f = 256 Hz) is sounded on a piano. If the length of the piano wire is 1.00 m and its mass density is 2.50 g/m, what is the tension in the wire?

## A rocket of total mass 3370 is traveling in outer space

A rocket of total mass 3370 is traveling in outer space with a velocity of 123 . To alter its course by 21.0, its rockets can be fired briefly in a direction perpendicular to its original motion. If the rocket gases are expelled at a speed of 2300 , how much mass must be expelled?

## If the coefficient of static friction between the board and the

If the coefficient of static friction between the board and the wall is 0.73, what is the least force you can apply and still hold the board in place?

## A 2.19 kg block initially at rest is pulled to the

A 2.19 kg block initially at rest is pulled to the right along a horizontal surface by a constant, horizontal force of 16.1 N. The coefficient of kinetic friction is 0.145. The acceleration of gravity is 9.8 m/s2 . Find the speed of the block after it has moved 3.35 m.

## A store owner wishes to hang a sign weighing 900 newtons

A store owner wishes to hang a sign weighing 900 newtons so that “cable a” attached to the store makes a 75 degree angle as shown. “Rod b” is ridged. The sign is attached at the midpoint of the rod, 1.75 meters from the building. Calculate the necessary tension in “cable a.”

## A 40 kg gymnast hangs vertically from a pair of parallel

A 40 kg gymnast hangs vertically from a pair of parallel rings. (a) If the ropes supporting the rings are attached to the ceiling directly above, what is the tension in each rope?

## Two charged bodies exert a force of 0.610 N on each

Two charged bodies exert a force of 0.610 N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted?

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