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A 50-kg diver steps off a 10-meter high platform at the local pool. She comes to rest 3.0 meters below the surface of the water.
(a) How much work is done by the water to bring her to a stop?
(b) What is the average force exerted by the water on the diver?
A copper wire has diameter 0.140mm and length 11.0cm . It's in a horizontal plane and carries a current of 2.50A, Find the magnitude of the magnetic field needed to suspend the wire against gravity.
A futuristic design for a car is to have a large disk -like flywheel within the car storing kinetic energy. find the maximum attainable speed of the car
The cubit is an ancient unit. Its length equals six palms. (A palm varies from 2.50 to 3.50 inches depending on the individual.) We are told Noah's ark was 300 cubits long, 50 cubits wide and 30 cubits high.
estimate the gravitational potential energy of the system relative to the lowest point of the motion when the cat is at its highest point.
Determine the electrostatic potential energy of an electron in the ground state of the hydrogen atom
A horse canters away from its trainer in a straight line, moving 111 m away in 15.0 s. It then turns abruptly and gallops halfway back in 4.90 s.
A race car can be slowed with a steady acceleration of -11 m/s2 if the car is going 55m/s how many meters would it travel before it stops.
find the velocity of their center of mass before the collision.
A 3.0x10 ² kg piano is being lifted at a steady speed from ground level straight up to an apartment 10 m above the ground. How much time does it take to lift the piano
A coil with 41 turns of wire is wrapped on a frame with a square cross-section 1.85 cm on a side. Find the magnitude of the induced current in the coil while the field is changing
Determine the resulting specific gravity when the three liquids in the containers A, B and C are mixed together.
A series RLC circuit is shown in the figure. The circuit is powered by an AC source. The peak emf of the AC source is 110 volt, What is the resonant frequency of this RLC circuit (in the unit of Hertz
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