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Q1. A satellite is in a low circular orbit about the Earth (such as it just skims the surface of the Earth). How long does it take to make one revolution around Earth? (The mean radius of the Earth is 6.38 × 106 m.)
Q2. A 43.0 kg girl is standing on a 132 kg plank. The plank, originally at rest, is free to slide on a frozen lake that is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.46 m/s relative to the plank.
What is her velocity relative to the surface of ice?
A certain particle has the life time of 10^-7 s, while measured at rest. How far does it go before decaying if its speed is 0.99 c when it is created.
Find out the effective coefficient of kinetic friction
The magnitude of the acceleration due to gravity
What is horizontal distance from press box to second base
A 0.12-kg ball is placed in a shallow wedge with an opening angle of 120°, as shown in the figure. For each contact point between the wedge and the ball, determine the force exerted on the ball. Assume the system is frictionless. Find contact force o..
What is magnitude of the momentum
What is x and y coordinates of the shell
What is the maximum displacement of the bridge deck?
What is electric field in the wire
If the initial temperature of the horseshoe is 450 °C, and the initial temperature of the water is 45° C, what is the equilibrium temperature of the system? Presume no heat is exchanged with the surroundings.
The triangular loop of wire in the drawing carries a current of I= 6.91 A. A uniform magnetic field is directed parallel to the side AB of the triangle and has a magnitude of 2.77 T.
An 845-N sled is pulled a distance of 173 m. The task requires 1.20 x 10^4 J of work and is done by pulling on a rope with the force of 142 N. At what angle is the rope held.
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