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A cat rides a merry-go-round while turning with uniform circular motion. At time t1 = 2.00 s, the cat's velocity is v1 = (5.50) i + (4.00 m/s) j, measured on a horizontal xy coordinate system. At time t2 = 5.00 s, a half-revolution later, its velocity is v2 = (-5.50 m/s) i + (-4.00 m/s) j.
(a) What is the magnitude of the cat's centripetal acceleration?
m/s2
(b) What is the magnitude of the cat's average acceleration during the time interval t2 - t1?
The sun produces its power from the conversion of mass into energy by Einstein's equation E=mc2 where c=3x10^8 mls. the sun's intensity on the earth is 1346W/m^2, find the rate at which mass is being converted to energy in the sun
Your goal in laboratory is to launch a ball of mass m straight up so that it reaches exactly height h above the top of the launching tube. Find an expression for the acceleration that will earn you maximum points
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A car with a mass of 1500 kg is traveking directly east at a slow speed of 1.20 mph and eleastically with a smaller car of mass of 1275 kg, Calculate the momenta of the cars before the collision
A beam of polarized light with an average intensity of 18.9 W/m2 is sent through a polarizer. find the rms value of the electric field of the transmitted beam
An object is recovered from under the sea. Its weight is measured to be 54.6 lb and its volume 1.3 ft3. What is the object's weight density
A solenoid of inductance L = 50 mH has a magnetic energy U = 3 x10-4 J with a density u = 0.0042 J/m3, What is the winding density n of the solenoid
An airtight box has a removable lid of area 1.00 10-2 m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 7.00 104 Pa. The inside of the box is completely displaced. What is the magnitude of the force es..
compute the magnitude of the magnetic force exerted on it.
A 2.47 kg steel ball strikes a massive wall at 11.7 m/s at an angle of alpha = 67.2° with the plane of the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.218 s, what is the magnitude of average force..
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