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A fancy sports car passes Big Ben at a speed of 0.2 c. What time interval will the driver measure for a one-second interval on the large clock?
Answer in units of s.
As a mechanical engineer, you must design a cooling unit fora new freezer. The enclosure has an inner surface of 6.0m2, What is the minimum power requirement of the cooling motor
A well-lubricated bicycle wheel spins a long time before stopping. Suppose a wheel initially rotating at 200 rpm takes 62 s to stop. If the angular acceleration is constant, how many revolutionsdoes the wheel make while stopping?
A lens that has a focal length of 8.90 cm is used as a magnifying glass. (a) To obtain maximum magnification and an image that can be seen clearly by a normal eye, where should the object be placed? (b) What is the magnification?
A ray of one color, for which n=1.51, and a ray of another color, for which n=1.6, travel through a piece of glass. What is the angle between the two rays in the glass
A whale uses sonar (sound waves) to supplement its eyesight for deep water dives. The whale sends out a sound wave, which returns in 0.5 seconds. How far away is the object it bounced off
A current of 10.0 mA is maintained in a single circular loop with a circumferenceof 1.60 m. A magnetic fieldof0.550 T is directed parallel tothe plane of the loop. What is the magnitude of the torque exerted by the magnetic field on the loop?
When n moles of an ideal gas is allowed to expand from an initial volume of 10 m3 at a constant temperature T the work done is equal to : - nRT ln 4, What was the final volume of the gas
A 75 kg person travels in a car at 50. mph over a hill. The radius of curvature at the peak of the hill is 90. m. What is the normal force of the seat pushing up on her
a fuse in an electric circuit is a wire that is designed to melt and thereby open the circuit if the current exceeds a
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you travel in a spacecraft with a speed of 0.2 c. your atomic watch light clock tells it takes 1 year to reach your
a very large nonconducting plate lying in the xy-plane carries a charge per unit area of 5theta. a second such plate
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