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A college student wants to toss a textbook to his roommate who is leaning out of a window directly above him. He throws the book upwards with an initial velocity of 8.0 m/s. The roommate catches it while it is travelling at 3.0 m/s [up].
a. How long was the book in the air?
b. How far vertically did the book travel?
The positron is a particle with the same mass as an electron but charge +e. what's the radius of its trajectory in the bubble chamber
When a man's face is in front of a concave mirror of radius 86cm, the lateral magnification of the image is +1.5. What is the image distance
A downward force of 3.0N is exerted on a -8.8C charge. What is the direction of the electric field at this point? What is the magnitude of the electric field at this point?
A child with a weight of 130 N swings on a playground swing attached to 2.10-m-long chains. What is the child's gravitational potential energy relative to his lowest position at the following times?
John's mass is 91 kilogram, and Barbara's is 67 kilogram. He is standing on the x axis at xJ = +9.80 m, Determine how far and in which direction does their center of mass move as a result of the switch
Two stunt men are going to jump out of a stationary balloon 457 meters off the ground, jumper A will jump first, pulling his parachute at 4 seconds after the jump. Jumper B will jump precisely 20 seconds after jumper A. Jumper B is slightly heavier t..
a science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of
The particle with energy E moves in positive direction toward the potential step Vo > E. Determine the probability to find the particle on the distance x from the potential step.
A 81-kg fullback is running at 3.3m/s to the east and is stopped in 0.85s by a head-on tackle by a tackler running due west. Calculate the original momentum of the fullback
A 19.8 kΩ resistor and a capacitor are connected in series and then a 12.0 V potential difference is suddenly applied across them. The potential dissimilarity across the capacitor raises to 8.83 Vin 1.92 µs. (a) Compute the time constant of the circu..
The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. Explain how high does the top of the ice block float above the water level?
What will be the resulting speed of the boat. A 74 kg fireman slides down a 4-m pole by applying a frictional force of 384 N against the pole with his hands. If he slides from rest, how fast is he moving once he reaches ground.
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