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A 23.0 kilogram small box of textbooks rests on a loading ramp that creates an angle = 36deg. with the horizontal. The coefficient of kinetic friction is 0.25. The box is released and starts sliding down.
(a) Find what is the normal force on the box?
(b) Find what is the acceleration of the box?
A diver springs upward from a board that is three meters abovewater. At an instant he contacts the water his speed is 9.20 m/sand his body makes an angle of 78.0o with respect to the horizontalsurface of the water.
Suppose we have an isotropic substance, for which the coefficient of linear expansion, α(alpha), is the same in all directions. Show the volume expansivity β(beta)=3α.
Two point charges 2.4 and 6.50 are 0.10 apart. Point is midway between them; point is 8.00×10-2 from and 6.00×10-2 from . Take the electric potential to be zero at infinity. Find out the work done by the electric field on a charge of 2.50 that tra..
Solar Energy Reaches the earth at the rate of about 1400 watts per sqaure meter of surface perpendicular to the direction of the sun. By how much does the mass of the sun decrease
Air traffic controllers use radar to keep track of the location of aircraft.
A student throws a set of keys vertically upward to her sister in a window 4.0 m above. The keys are caught 1.5 s later by the sister’s outstretched h&. Find initial speed were the keys thrown?
Some particle accelerators accelerate particles around in circular paths up to speeds very close to the speed of light. Which radius will be advantageous and why?
A skier is slinding downhill at 11 m/s when she reaches an icy path on which her skies more freely with negligible friction. find the speed of the skier at the bottom of the icy path
Calculate the location of the center of mass of the Earth-Moon-Sun system during a full Moon. A full Moon occurs when the Earth, Moon, and Sun are lined up. make Use of a coordinate system in which the center of the sun is at x=0 and the Earth and..
mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy.
A wire carries a current of 0.97 A . This wire makes an angleof 64 degree with respect to the magnetic field of magnitude3.8*10-5T. What is the lenght of the wire
small 12.8g plastic ball is tied to a very light 26.9cm string that is attached to the vertical wall of a room. Find the direction of the electric field in the room
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