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A 76.4 kg man sits in a 5.4 kg chair so that his weight is evenly distributed on the legs of the chair. Assume that each leg makes contact with the floor over a circular area with a radius of 2.3 cm.
The acceleration of gravity is 9.81 m/s2 .
What is the pressure exerted on the floor by each leg?
Two charges are located on the x axis. One of the charges (q1=+8.5µC) is at x1=+3.0 centimeter and the other (q2= -21µC) is at x1=+9.0 centimeter. Determine the net electric field both magnitude and direction at x= 0 cm
two crates rest on the floor one next to the other. a man pushes with a horizontal force of 600 n on the larger 50.0 kg
What is the magnitude of the electric force of attraction between an iron nucleus (q=+26e) and its innermost electron if the distance between them is 1.5 x 10^-12m
a target in a shooting range gallery of a square wooden board of side length s 0.500 meter and mass mt 0.750 kg that
A wheel rotates through an angle of 13.8rad as it slows down from 22.0 rad/s to 13.5 rad/s. what is the magnitude of the angular acceleration of the wheel
An engine with an output of 300 W has an efficiency of 35.0 %. It works at 13.00 cycles/s. How much work is done in each cycle
At time a grinding wheel has an angular velocity of 22. It has a constant angular acceleration of 28.0 until a circuit breaker trips at time = 1.60 . From then on, the wheel turns by an angle of 438 as it coasts to a stop at constant angular decel..
A gas expands while 502 J of energy is added to it as heat. The expanding gas does 422 J of work on its surroundings.
A 12 kg block is at rest on a level floor.A 395 g glob of putty is thrown at theblock such that it travels horizontally, hits the block, and sticksto it. The block and putty slide 15 cm along the floor. If the coefficient of sliding friction is 0.40,..
The magnetic field of an electromagnetic wave in a vacuum is B_ z = ( 4.0mu T )sin( 1.0×107 x - 2 pi f t) , where x is in m and t is in s. what is the wave's electric field amplitude
The radius of the earth is 6.3x10^4m and it completes one revolution in 1 day. what is the centripetal acceleration of an object located on the equator?
A 550-W space heater is designed for operation inGermany, where household electrical outlets supply 230 V (rms)service. What is the power output of the heater when plugged into a120-V (rms) electrical outlet in a house in the United States? Ignore th..
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