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Q1. Find flux due to a point charge q on a rectangle of sides l x b at a distance r from the charge along the center of the rectangle.
Q2. A wave in the ocean has amplitude of 3 m. winds pick up suddenly increasing the waves amplitude to 6 m. How does this change in amplitude affect the wave's frequency and the amount of it transports?
Q3. An old trick to find out if a train is coming is to put your ear on the rails of the track. Why is this more effective than just listening for the sounds the train makes in air?
A 1128 kg car and a 2210 kg pickup truck approach a curve on the expressway that has a radius of 272 m. A) At what angle should the highway engineer bank this curve so that vehicles traveling at 72.9 can safely round it regardless of the condition..
The magnetic field of the earth at a certain location is directed vertically downward and has a magnitude of 50.0 µT. FIND magnitude of the magnetic force the field exerts on the proton
To hoist himself into a tree, a 72.0-kg man ties one end of a nylon rope around his waist and throws the other end over a branch of the tree. determine the man's upward acceleration
The racket is a potential-energy barrier whose height is the energy of the slowest string-breaking ball. Suppose that a 100 g tennis ball traveling at 220mph is just sufficient to break the 2.0-mm-thick strings.
Suppose Galileo's pulse rate was 68 beats per minute. What is the time between consecutive pulse beats
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.
A 0.50-kg object is attached to an ideal massless spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.7 m/s at the equilibrium position.
four positive charges of equal magnitude form the corners of a square. each side of the square has a length of 0.5 m. what is the magnitude of the electric field at the center of the square in n/c
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the speed of a satellite in a geosynchronous orbit
a -58 nC charge is distributed uniformly along the x-axis from x = -1.3 m to x = 3.4 m. Consider a point at y = 2.2 m on the y-axis. a) what is the x-component of the electric field at the point
A sinusoidal wave travels along a stretched string. A particle on the string has a maximum velocity of 0.800m/s, What is the amplitude of the wave
An iron bar of mass, 0.73 kg, slides down a frictionless incline 0.91 m high. find the speed of the combined masses after collision
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