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Two cars with different masses are taking a left turn in a flat road. Which of those cars will experience a bigger (a) centripetal force? (b) centripetal acceleration?
Suppose a 1.17×104 kg spaceship left Earth at a speed of 0.90c. What is the spaceship's kinetic energy? Compare with the total U.S. annual energy consumption (about 10^20 J).
A block of mass 2.50 kg is pushed 2.60 m along a frictionless horizontal table by aconstant 16.0 N force directed 25.0°below the horizontal. Determine the work done by the net force on the block
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A 65.0 kg human sprinter can accelerate from rest to 10 m/s in 2.90 s. all through the same interval, a 33 kg greyhound can accelerate from rest to 20 m/s. calculate (a) change in kinetic energy and (b) average power output for each.
A particular amplifying device supplies electrons in a manner such that the current passing out of the device, Determine the charge that passes out of the device if left on for 30 seconds
An astronomical telescope has
An energy efficient light bulb, taking in 28.0 W of power, can produce the same level of brightness as a conventional light bulb operating at power 100 W.
a metal sphere of radius 80. mm is charged to a potential of -0.50 kv. with what velocity must an electron be fired
A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. For how long (in hours) is the sample usable
There is evidence that elephants communicate via infrasound, Determine the intensity level of the infrasound 10 km from the source, assuming the sound energy radiates uniformly in all directions
A diver of mass 68 kg stands at the end of a uniform diving board of mass 16 kg and length 4:5 m, Calculate the magnitudes of the forces exerted by the pedestals on the diving board
if 484.7 ml of nitrogen gas measured at 777.5 mmhg and 88.2oc reacts with excess iodine according to the following
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