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A horizontal force of 60 N pushes a box that weighs 75 N across the floor at a constant speed. The coefficient of kinetic friction is 0.8. Find the rate at which power is generated by applied force if it takes 30 sec to push the box 10 m?
assume a perfectly elastic collision between a 916g bat and a 145 g baseball. Find the bat's speed before and after the collision
A thin 1.7-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod. There are no other antinodes. What is the frequency of the rod's vibration
Two children hang by their hands from the same tree branch. Thebranch is straight, and grows out from the tree trunk at an angleof 27.0o above the horizontal.
A 17 ?F capacitor is charged to 20 V and is then connected across a 11 mH inductor. What is the frequency of oscillation of the circuit
A merry-g-round (I=1/2MR^2) of mas 250kg and radius 3m has been spun so that is has an angular velocity of 15 rad/s. what is the final angular velocity of the merry-go-round
A 3m long wire of mass 200g is suspended in a magnetic field of 0.3 T, find the magnitude of the current is flowing through the wire
A 0.800 kg particle has a speed of2.00 m/s at point A andkinetic energy of 7.30 J at pointB.
Electrons from a heated cathode are accelerated through a potential difference of 30.0 Volt. Find the speed of electrons escaping through a hole in the anode
A 0.140 kg baseball is thrown with a velocity of 26.2 m/s. It is struck with an average force of 500.0 NM which results in a velocity of 37.0 m/s in the opposite direction
The charge on the opposite side to the point is -4 nC and the charges on the adjacent sides of the square are +4 nC. Find the potential at the uncharged corner
A uniform solid marble rolls down a symmetric bowl, starting from rest at the top of the left side of the bowl. How far will the marble go up the right side
conducting sphere x is initially uncharged. conducting sphere y has twice the diameter of sphere x and initially has
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