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A person runs up a long flight of stairs in 10 seconds. If the person's weight is 500 N and the vertical height of the stairs is 20 meters, what is the person's power output? show all work.
a ball rolls off a platform that is 7 meters above the ground. the balls horizontal velocity as it leaves the platform
The maximum current in a particular type of solenoid (used in strong B field research) can be as large as 4 kA. what is the maximum size of the magnetic field produced inside the solenoid
A circular coil of wire with 40 turns and a radius of 33.3 cm is laying flat on a horizontal, find the magnitude of the magnetic flux through the coil
One of the weapons considered for the "Star Wars" antimissile system is a laser that could destroy ballistic missiles. When a high-power laser is used in the Earth's atmosphere, the electric field can ionize the air, turning it into a conducting p..
Two charged bodies exert the force of 0.185N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
The other end is attaced to a 3 kg disk moving in uniform circular motion on the table, which stretches the spring by 1 cm. Note: Friction is negligibe. Illustrate what is the work done on the disk by the spring during one full circle?
A person desires to reach a point that is 3.40 km from her present location and in a direction that is 350 north of east. However, she must travel along streets that are oriented either north-south or east-west. What is the minimum distance she mi..
The temperature of 3.00 mol of an ideal diatomic gas is increased by 47.0°C without the pressure of the gas changing. What is the change in the internal energy for the gas
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 2.85 multiplied by 10-4 m3, What mass of gold is contained in the rock
A small bird's wings can undergo a maximum displacement amplitude of 5.9 cm. what is the oscillation frequency of the wing tips
Water is flowing through a circular hole in a large, open tank at a rate of 126 ml / s. The hole is 3.75 meters below the surface of the water in the open tank. The area of the hole is 4 cm2
A ball swings in a vertical circle at the end of a rope 1.30 m long. When the ball is 37.3 ° past the lowest point on its way up, Sketch a vector diagram showing the components of its acceleration
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