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A bullet is fired horizontally with an initial velocity of 250m/s from a tower that is 20 m high.
a) Calculate the time the bullet is in the air.
b) If air resistance is negligible, calculate the horizontaldistance the bullet travels before striking the ground.
What is its velocity when it reaches the maximum height.
A small glass bead has been charged to +30.0nC. A metal ball bearing 1.30cm above the bead feels a 1.90×10?2N downward electric force. What is the charge on the ball bearing?
Gas is confined in a tank at a pressure of 13.2 atm and a temperature of 21.5°C. what is the pressure of the gas remaining in the tank
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A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. What impulse was given to the ball by the floor
A 64g bullet traveling at 250 m/s penetrates a block of ice at 0 C and comes to rest within the ice. how much ice is melted as a result of the collision
It is believed that a large electric fish known as Torpedo occidentalis uses electricity to shock its victims. What is the rate at which this work is done by the electric organs during a pulse
The maximum intensity per unit wavelength of an ideal blackbody occurs at the same wavelength as the electromagnetic radiation absorbed in a transition from the fourth excited state to the sixth excited state in a hydrogen atom
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The water in a atank is at a gauge pressure of 190,000 Pa. what is the force on the bottom of the tank
The figure shows the blade of a chain saw. The rotating sprocket tip at the end of the guide bar has a radius of 0.0343 m. Find the angular speed of the sprocket tip in rev/s
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