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All "simple machines" (pulleys) operate via the same principle. Explain how relative amounts of force used , distance traveled and work done apply to these machines.
You shoot an arrow into the air. Two seconds later arrow has gone straight upward to a height of 30 meters above its launch point. a) What was the arrow's initial speed? b) How long did it take for the arrow to first reach a height of 15 meters ab..
On a 7.2 m length of string, you count 5 crests and 4 troughs. What is the wavelength of the waves on the string
Pendulum bob A has half the mass of pendulum bob B. Each bob is tied to a string that is 5.1 meters long, How high do the bobs rise after the collision
A square wire loop 11.0 cm on each side carries a clockwise current of 16.0 A. Find the direction of this magnetic field
The train on the right accelerates leftward at 0.82 m/s2.How far does train on the left travel before the front ends of the trains pass.
A 1000 kg flat railroad car is rolling to the right at 4.5 m/s. A 60 kg man, is standing on the right end of the cart watching the track in front of the car. What is the final speed of the train car with the mud stuck to it
Consider a model thermodynamic system in which the allowed (nondegenerate) energy levels are 0, ? (epsilon), 2? (epsilon), 3? (epsilon). Determine how many macrostates are possible
A converging lens (f = 11.4 cm) is located 33.0 cm to the left of a diverging lens (f = -5.4 cm). A postage stamp is placed 36.6 cm to the left of the converging lens. Find the overall magnification.
Object A has a position as a function of time given by A(t) = (3.00 m/s)t + (1.00 m/s2)t2, What is the distance between object A and object B at time t = 4s?
The starship Enterprise speeds by you at a speed of 0.960c. It is measure in your frame to be 100 m long. What will be it's length at rest
What is wind velocity
What minimum horsepower must a motor have to be capable to drag a 290 box along a level floor at a speed of 1.05 if the coefficient of friction is 0.50.
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