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A positive charge q is placed at the origin. Identical charges Q are located at ±a on the x-axis. If the charge q is dispaced at a small distance x (much smaller than a) in either direction along the x-axis, find the period of SHM.
A spring is hung from the ceiling. A 0.375 -kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
if you decrease the hanging mass by a factor of four( 0.55 kg/4) but keep the linear mass density the same, by what factor does the fundamental frequency change
A cue ball (mass = 0.165 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick, which applies an impulse of +1.61 N·s to the ball. Find the velocity of the second ball just after it is struck
A boy 11.0m above the ground in a tree throws a ball for his dog, who is standing right below the tree and starts running the instant the ball is thrown. How far from the tree will the dog catch the ball
In a head-on collision, a car stops in 0.3s from a speed of 30 m/s. What is the force applied to the driver by his seat belt during the collision
A 40 kg child sits in a swing suspended with 2.5 m long rope. Use energy conservation to determine the speed the child will have at the bottom of the arc when she is let go
A skier of mass m= 70kg glides down a slope at angle theta= 32 degrees, as shown in the figure below. The snow is so slippery that you can neglect friction. Find the force the snow exerts on the skier
A cannon fires a 2-kg exploding projectile across a level field on a windless day. How far away from the cannon does the second piece land
Light of wavelength 480nm is incident on a metallic surface with a resultant photoelectric stopping potential of .55V. What is the work function of the metal
An ideal spring with a spring constant of 25.0 N/m is suspended vertically. A 1.00 kg object is attached to the unstretched spring and released. Determine the magnitude of the oscillations
A satellite moves in a circular orbit around Earth at a speed of 4439 m/s. Determine the period of the satellites orbit
Squids and octopuses propel themselves by expelling water. They do this by taking the water into a cavity and then suddenly contracting the cavity, How much kinetic energy does the squid create for this escape maneuver
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