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A proton is moving parallel to a uniform electric field. The electric field accelerates the proton and increases its linear momentum to 4.00 10-23 kg·m/s from 1.20 10-23 kg·m/s in a time of 6.50 10-6 s. What is the magnitude of the electric field?
If the coefficient of friction between road and tires on a rainy day is 0.120, what is the minimum distance in which the car will stop.
A cylindrical container with a cross-sectional area of79.7 cm2 holds a fluid ofdensity 765 kg/m3. What is the depth of the fluid
Draw a motion diagram for the train. Assume that the train is moving toward the right and starts to slow down at t = 0. The separation of each dot represents an elapsed time of one second.
A 1-kg steel ball and a 2-m cord of negligible mass make up asimple pendulum that can pivot without friction about a pointabove the system. What is the velocity of the block just after impact
when light of a wavelength of 200 nm is incident on a surface, What is the work function of the surface
q1. snoop in hot pursuit of the red baron is flying his vintage warplane in a loop-the-loop path. his instruments tell
When light of wavelength 350 nm is incident on a metalsurface, the stopping potential of the photoelectrons is 0.500 eV. What is the threshold frequency
A 300g ball on a 70cm -long string is swung in a vertical circle about a point 200 cm above the floor, What was the tension in the string an instant before it broke
Consider the interface between atmospheric air and a body of water, both at 17 °C. What are the mole and mass fraction of water at the air side of the interface? At the water side of the interface?
A steel ball of mass 0.5 kg is fired vertically up from the edge of a building 20 m high with an initial speed of 10 m/s. Determine: the average resistance force that sand exerts on the ball
Suppose that a police car on the highway is moving to theright at 27 m/s, while the speeder is coming up from behind at aspeed of 39 m/s, both speeds being with respect to the ground. Which wave has the greater frequency
Clarice is standing at the edge of a steep cliff when a boulder comes loose from the edge and falls directly downward toward the lake below. Clarice hears the sound of the boulder hitting the water 7.5 s later. If the speed of sound is 340 m/s, how h..
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