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An uncharged 20 F capacitor is connected to a power supply set to 10 V. How much charge flows onto the capacitor plates? If the power supply voltage is then increased to 30 V, how much more charge flows onto the plates?
1. an electric motor performs 2000 j of work while lifting a 50 kg mass. how far does it lift the mass?it it takes
A sprinter of mass 72.8 kg runs at a constant speed of 10.8 m/s in a straight line. Find the extra force the sprinter must exert on the ground to round a curve of radius 10.4 m
An elevator moves downward in a tall building at a constant speed of 3.80 m/s. Estimate the highest floor from which the bolt can fall
A constant force of 23 N pulls on a 12 kg block on a horizontal surface. What is the work done by the constant force
A 2 kg ball is dropped from a height of 1/5 m. It bounces off the floor with a velocity of 1 m/s. What is the impulse (magnitude and direction) applied to the ball during the collision with the floor
A uniform metal rod, with a mass of 3.3 and a length of 1.4 , is attached to a wall by a hinge at its base. A horizontal wire bolted to the wall 0.59 above base of the rod holds the rod at an angle of 25 above the horizontal. The wire is attached ..
A 0.401 kg bead can slide on a curved wire, If the wire is frictionless and the bead is released with an initial speed of 12.8 m/s in the forward direction then find the speed of the bead at B
A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.0 cm below the aim point. What was the bullet's speed as it left the barrel
Two train cars are on a straight, horizontal track. One car starts at rest and is put in motion with a constant acceleration of 1.01 m/s2. Where will the cars collide
A 20.0 cm long organ pipe is filled with air and is open at one end and closed at the other. What is the frequency of the third mode
a rocket takes off at an angle of 20deg from vertical. two observers are standing 20 miles away from the lunch site so
What are the velocities of the two people after the snowball is exchanged? Disregard friction between skate and the ice.
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