Force of friction between the block and table
A 3.00kg mass resting on a level table top is pulled alond by a horizontal force of 16.0N and accelerates at 4.00 meters per second per second. what is the force of friction between the block and table?
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sound waves to people sitting across the newsroom, 1.2 m from the newscaster. Take the speed of sound in air to be 345 m/s. What is the difference in time that the message is received?
Planet Z is 9,000 km in diameter. The acceleration due to gravity on Planet Z is 8.5 m/s2. What is the mass of Planet Z?
In New England, the horizontal component of the Earth's magnetic field has a magnitude of 1.4 x 10-5 T. An electron is shot vertically straight up from the ground with a speed of 3.9 x 106 m/s. What is the magnitude of the acceleration caused by t
An ancient club is found that contains 120 g of pure carbon and has an activity of 7 decays per second. Determine its age assuming that in living trees the ratio of 14C/12C atoms is about 1.1x10-12. Note that the half life of carbon-14 is 5700 yea
A shotputter accelerates a 7.3kg shot from rest to 14m/s. If this motion takes 1.5s, what average power was developed?
The wire is wound onto a cardboard tube in a single layer, with adjacent turns touching each other. What power must be delivered to the solenoid if it is to produce a field of 7.80 mT at its center?
The locations marked by "x" and labeled by a letter are in the interior of the wire. How many electrons per second enter the positive end of the battery 2? Answer in units of electrons/s.
If a car of mass 1000 kg is moving along a highway at 92 km/h, what is the car's kinetic energy as determined by someone standing alongside the highway?
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