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On days of fair weather, the atmospheric electric field of the Earth is about 116 N/C; this field points vertically downward. What is the surface charge density on the ground? Treat the ground as a flat conductor.
A rifle fires a 2.39 10-2-kg pellet straight upward, since the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 9.17 10-2 m from its unstrained length. The pellet r..
An object-spring system oscillates with amplitude of 3.00cm. If the spring constant is 205 N/m and object has a mass of 0.50 kg, determine each of the following values.
An ?-particle has a charge of +2e and a mass of 6.64 ? 10-27 kg, What is the speed of the ?-particle and What is the radius of its circular path
A 1.0 kg block is attached to a spring with spring constant 18.0 N/m. While the block is sitting at rest, a student hits it with the hammer and almost instantly gives it a speed of 41.0 cm/s. What is the amplitude of the subsequent oscillations? The ..
A person on a safari wants to take a photograph of a hippopotamus from a distance of 78.8 m. The animal is 4.90 m long and its image is to be 1.24 cm long on the film. What focal length lens should be used
q1. a person exerts a horizontal force of f 175 n in the test apparatus shown in the drawing. h 0.25 m. find the
A cable 24 m long and 1.5 mm radius is stretched by a force of 550 N. If the length after stretching is 24.05 m, what is Young's modulus for the cable
Please solve this problem for me: A large cruise ship of mass 7.00 107 kg has a speed of 10.0 m/s at some instant. How much work is required to stop it
A particle of ionizing radiation creates 4900 ion pairs in the gas inside a Geiger tube as it passes through. What minimum energy was deposited
Jamal pulls a 200N sled up a 28° slope at a constant speed by a force of 100N. Near the top of the hill he releases the sled, With what acceleration does the sled go down the slope
An electron is accelerated from rest to 5.60x10^6 m/s in 1.50 us by a uniform electric field calculate the work done by the electric field
A lighthouse sweeps its beam of light around in a circle once every 6.0 s. To an observer in a spaceship moving away from Earth, What is the speed of the spaceship relative to Earth
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