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You shoot a ball of mass 50g into a pendulum arm of mass 200g, whose center of mass rises 15cm. Calculate the initial velocity of ball.
question for a satellite to maintain a circular orbit around the earth what parameters must be balanced? what would
a positively charged particle of mass 8.75 times 10-8 kg is traveling due east with a speed of 77.2 ms and enters a
If it is orbital velocity that keeps the electron orbiting the protron and as its energy decays does it get drawn into the innerrings till it get drawn into thr proton to become a neutron?
A woman at an airport is towing her 20.5 kg suitcase at constant speed by pulling on a strap at an angle of ? above the horizontal. What angle does the strap make with the horizontal
Two astronauts floating at rest with respect to their ship in space decide to play catch with a3-kg asteroid. What is Joe's speed right after his first catch
A nitrogen molecule is initially in a large volume of calm air at STP. How many collisions does the nitrogen molecule suffer in 10 minutes
An asteroid has acquired a net negative charge of 119 C from being bombarded by the solar wind over the years, and is currently in equilibrium whereby it expels electrons at the same rate as it acquires them. How many more electrons does it have than..
When a single high-resistance (long) bulb is connected to a 1.5 volt battery, the current through the battery is about 80 milliampere. If you add another high-resistance (long) bulb in parallel, the battery current of course increases to 160 milliamp..
Your car tire is rotating at 3.3 rev/s when suddenly you press down hard on the accelerator. What was the tire's angular acceleration
The mass of nitrogen molecule, N2, is 4x10^26 kg. What is its root mean square (rms) speed at 40 degrees Celsius
A 2 kg object is dropped and falls 20m, at which point it is caught and a net force of 100N is exerted on the object. How much time did the object take to fall
A plane flying horizontally at a speed of 50.0 m/s and at an elevation of 160 m drops a package of supplies. Two seconds later it drops a second package. How far apart will the two packages land on the ground?
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