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A hammer slides down a roof that makes a 40 degree angle with the horizontal. What are the magnitudes of the components of the hammer's velocity at the edge of the roof it it is moving at a speed of 4.25 m/s?
After the right string is cut, the meterstick swings down to where it is vertical for an instant before it swings back up in the other direction. What is the angular speed when the meterstick is vertical
Two starships, the Enterprise and the Constitution, are approaching each other head-on from a great distance. what wavelength was emitted by the Enterprise
A cube made of steel 0.300 meters on a side is suspended from a scale until it is completely immersed in fresh water
a helium baloon is used to lift something which weighs 100n. the layer of the baloon weighs 50n and the volume of the
If you throw a ball upward with an initial speed of 4 m/s at 1.5 m above the ground find the flying time for this free fall motio
An automobile of mass m = 1100 kg is being towed by a truck whose driver observes that the tension in the rope is T = 3700 N, What is the work done to overcome friction in the car
A 120 V ac voltage source is connected across a 2 muF capacitor. Find the current to the capacitor if the frequency of the source is 60 Hz. What is the power loss in the capacitor?
Some species use echolocation to determine the position and velocity of objects and prey. What is the sound frequency of the echo the bat hears
An electron and a positron (an antielectron) make a head-on collision, each moving at v=0.99999c. What is the kinetic energy of each of the muons
If the two balls started rolling at the same time at a point 1.2 m behind the edge of the table, will they reach the floor at the same time? define.
The free-fall acceleration on the surface of Mars is about three eighths that on the surface of the Earth. Find the ratio of their average densities, ?Mars/?Earth
a parallel-plate air capacitor is made from two plates 0.300 square spaced 0.800 apart. it is connected to a 120
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