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In a binary star system, two stars have elliptical orbits about the center of mass of the system. Consider a binary star system consisting of stars of masses 2.30 x 1030 kg and 3.10 x 1030 kg. If at one point in their orbit they are 4.40 x 1016 m apart, then they move closer together to become 1.80 x 1015 m apart, what is the change in the gravitational potential energy of the system?
A gas is enclosed in a cylinder fitted with a light frictionless piston and maintained at atmospheric pressure. Calculate the change in internal energy of the gas
It was a rainy day and the coefficient of friction was estimated to be 0.42. Use these data to determine the speed of the car while the driver slammed on (and locked) the brakes.
A certain elevator cab has a total run of 190 m and a maximum speed of 305 m/min, and it accelerates from rest and then back to rest at 1.22 m/s2. How long does it take to make the nonstop 190 m run, starting and ending at rest
The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.800, and the log has an acceleration of 0.800 m/s2. Find out the tension in the rope.
Compressed air can be pumped underground into huge caverns as a form of energy storage. The volume of a cavern is 4.9 Ã- 105 m3, how many homes could this internal energy serve
A series RLC circuit contains an AC generator (120 volts rms, frequency = 60 Hz), a 35.0 ohm resistor, a 1.49×10^?5 F capacitor, Determine the inductive reactance
A 80-kg driver can decrease his rotation rate in a flip from an initial rate of 3.0rev/s to a final rate of 1 rev in 2 sec by straightening his body. find his final moment of inertia, then find his initial moment of inertia
A 3.8 kg box is sliding down a surface that is inclined downwards by 30° below the horizontal. How much energy of the box has been lost (dissipated) by the friction
You're driving down the highway late one night at 18 m/s when a deer steps onto the road 45m in front of you. What is the maximum speed you could have
A 29.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 85.0 N and is directed at the angle of 30.0° above the horizontal. Find out the coefficient of kinetic friction.
1.50-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 5.60sin(2?t), FIND THE AMPLITUDE OF THE MOTION
A cube of mass m1 = 8.8 kg is sitting on top of another cube of the same size, What is the magnitude of the normal force with which the bottom cube is acting on the top cube
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