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A boulder flies through the air at 11.8 meter per second with kinetic energy 314 Joule.
Part A Determine What is its mass?
Part B Determine the boulder kinetic energy if its speed doubles?
Part C Determine the boulder kinetic energy if its speed is halved?
A 30 kg launching machine fires a 250 gram projectile horizontally at 100 m/s. What was the momentum of the machine
A uniform chain with a mass of 1.38 kg per meter of length is coiled on a table. One end is pulled upward at a constant rate of 0.54 m/s. how much force must be applied to the end being raised
A small bag of sand is suspended by a wire of length L=1.2 m. A bullet of mass m=8 gr, moving with speed v0=600 m/s in the horizontal direction, What is the mass of the bag
Assume a spacecraft of mass 28,000 kg is accelerated to 0.43c. How much kinetic energy would it have? If you utilized the classical formula for kinetic energy, by what percentage would you be in error?
The Yerkes telescope in southern Wisconsin is the largest refracting telescope in the world. Its objective lens is 40 inches (slightly over a meter) in diameter. What are the focal lengths of the two lenses
A stunt pilot performs a circular dive of radius 715m. At the bottom of the dive pilot has a speed of 265 m/s which at that instant is increasing at a rate of 15 m/s2(along the direction of vector B) What total acceleration does the pilot have at ..
q.1. a particle leaves the origin with an initial velocity 6.67 ms and a constant acceleration - 2.48 - 4.29 ms2.
question a transformer has n1 350 turns and n2 2 000 turns. if the input voltage is ?v t 170 v cos wt what rms
A spring is undergoing simple harmonic motion. The points y =A0 and y = -A0 are the endpoints of thespring's motion. At which point is its acceleration zero
Water is moving at a speed of 7.55 m/s through a fire hose with an internal diameter of 5.99 cm. What is the gauge pressure of water in the hose
Tarzan spies a 40kg chimpanzee in severe danger, so he swings to the rescue. He adjusts his strong, but very light, What are the frequency of Tarzan's swing
An asteroid is discovered heading straight toward Earth at 14km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 {rm min}, after which asteroid is moving at 26^circ to its original path at a..
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