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A load of 52.5 N attached to a spring hanging vertically stretches the spring 5.29 cm. The spring is now placed horizontally on a table and stretched 10.8 cm. What force is required to stretch the spring by this amount?
The shell, with radius R and negligible thickness, has net charge - 4.00 q. Find an expression for the electric field strength outside the sphere
an 18-kg groceryi cart is pushed at constant speed along an aisle by a force of 12N. Find the work done by each of the forces on the cart
A transformer is designed to change 120 V into 10,000 V, and there are 164 turns in the primary coil. How many turns are in the secondary coil
A near-sighted person's eyeglasses has a focal length of ? 22.0 cm, and the lens is 1.8 cm from the eye. what should be the focal length of the corresponding contact lens
Find the angle required to produce this alignment of . (Assume the pulleys are ideal.) Find out the magnitude of the force, that is applied to the femur in this case.
Water flows with speed 1 m/s from a small hole made at the bottom of a tank filled with water. Find height of the tank
A 56 kg astronaut floating at rest in space outside a space capsule throws his 0.50kg hammer such that it moves with the speed of 14.00 m/s relative to the capsule. What happens to the astronaut? What is the astronaut's speed.
Algol consists of a 3.7 MSun main-sequence star and a 0.8 MSun subgiant. Why does this seem surprising, as a minimum at first.
A 1.00 cm object is 60.0 cm in front of a diverging lens that has a -30.0 cm focal length. Find the image position and height. Is the image real or virtual? Is the image upright or inverted
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber, If a sample of gold with a mass of 2.477g, is pressed into a leaf of 4.116 ?m thickness, what is the area (in m2)..
You are standing still and watching a spaceship fly past. How fast is the spaceship moving, relative to you
To measure the static friction coefficient between a 2.2-kg block and a vertical wall, the setup shown in the drawing is used. What is the coefficient of static friction
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