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A 1.3 {\rm kg} block and a2.3 {\rm kg} block are attached toopposite ends of a light rope. The rope hangs over a solid,frictionless pulley that is 28 {\rm cm} in diameter and has a massof 0.78 {\rm kg}. What is the acceleration ofthe lighter block?
Aluminum is a very light metal with density of 2.7 g/cm^3. What is the weight in pounds of a solid sphere of aluminum of radius 50 cm
An 20cm--long bicycle crank arm, with a pedal at one end, is attached to a 25cm--diameter sprocket, What is the tangential acceleration of the pedal
A proton moving eastward with a velocity of 5.0 x 103m/s enters a magnetic field of .20 T pointingnorthward. What is the magnitude and direction of the force that acts on the proton?
a buckey ball is a large molecule comprised of 60 carbon atoms arranged in a shape something like a hollow sphare
A 212-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. evaluate the tension in the rope
An object of mass 12.0 kg and traveling 10.0 m/s to the right collides with a second object of mass 24.0 kg traveling 13.0 m/s to the left. how much energy went into heat and sound
Two point charges each have a value of 30.00 x 10^-3 and are separated by a distance of .04m what is the electric field midway between the two charges
If you touch the terminal of a battery, What current will pass through your body if you touch the two terminals of a 9.0 V battery with your two hands
The label on a commercially purchased radioactive sample gives its activity as 16 µCi. The half-life of the sample is 60 days. How old is the sample
q1. a highway curve of radius 500 m is designed for traffic moving at a speed of 96.0 kmhr. what is the accurate
A 1000-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam.
A racing dog is initially running at 18.0 , but is slowing down. By what fraction has its kinetic energy been reduced
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