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A space station in the form of a large wheel, 162 m in diameter, rotates to provide an "artificial gravity" of 7.4 m/s^2 for people located at the outer rim.
What is the frequency of the rotational motion for the wheel to produce this effect? (answer in units of rev/min)
A certain nuclear power plant has an electrical power output of 430 MW. The rate at which energy must be supplied to the plant is 1,510 MW. What is the thermal efficiency of the power plant
What mass of stone is necessary if the temperature is not to drop below 18.5°C overnight. Sunlight shining in during the daytime is absorbed by the floor, interior walls, and objects in the room, raising their temperature to 37.5°C.
A loudspeaker of mass 22 {rm kg} is suspended a distance of h = 2 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of l = 3.90 {rm m}.
The potential difference between the surface of a 2.2cm -diameter power line and a point 1.3m distant is 3.7kV. What is the line charge density on the power line
Please show how you got the answer, thanks! At the top of a hill with slope angle 32o a snow sled is moving at 4 m/s. how fast will the sled be traveling at the bottom
Mitch is sitting at rest on a wheeled chair in a long hallway. Mitch and the chair have a combined weight of 540 N. how far will Mitch travel after catching the ball
An electromagnetic wave in a vacuum has an instantaneous magnetic field strength of 0.000000735 T at a certain point. What is the instantaneous electric field strength of the wave at this point
In a double slit experiment there are two plane monochromatic waves incident on the slits. One wavelength is red with lamba= 600.0 nm, Calculate the linear separation of the red fringes
A railroad car of mass 3.4 x 104 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
A copper cylinder with a temperature of 277 K is found to emit 179 J of energy each second. what is its surface area
A solenoid of radius 3.5 cm has 800 turns and a length of 25 cm. Find the rate at which current must change through it to produce an emf of 90 mV
Two atomic clocks are synchronized while on Earth before one is launched (within a GPS satellite) into a medium-altitude Earth orbit. estimate the time difference between the two atomic clocks
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