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A 15 kg block is on a ramp that is inclined at 20° above the horizontal. It is associated by a string to a 19kgmass that hangs over the top edge of the ramp. Assuming that frictional forces might be neglected, what is the magnitude of the acceleration of the 19kg block?
A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck position. After he leaves the diving board (with some unidentified angular velocity), he pulls him self into a ball as closely as possible and makes ..
The primary coil of a transformer makes 240 turns around the iron core and the secondary coil of that transformer makes 80turns. determine what is the secondary voltage
A transformer has 683 turns in its primary winding and 109 in its secondary winding. Assuming it has 100 percent efficiency, By what factor does it change the current
A 0.180-kg yo-yo consists of two solid disks of radius 12.00cm joined together by a massless rod of radius 1.00 cm, Find the acceleration of the yo-yo
A ball of mass 0.30 kg is fired with velocity 160 m/s into the barrel of a spring gun of mass 2.5 kg initially at rest on a frictionless surface. What fraction of the ball's initial kinetic energy is stored in the spring
A 1.4-m-diameter vat of liquid is 2.2m deep. The pressure at the bottom of the vat is 1.3atm. What is the mass of the liquid in the vat
it takes 7500 J of work to slide a crate a distance of 15 m across a floor. A force of 650 N was applied to the rope. what angle did the rope make with the ground
A spherical drop of water carrying a charge of 35 pC has a potential of 540 V at its surface (with V = 0 atinfinity). What is the radius of the drop?
An intense light source radiates uniformly inall directions. At a distance of 5.2 {\rm m} from the source the radiation pressure on aperfectly absorbing surface is6.9×10-6 {\rm Pa}. What is the total average power output of the source
When light of wavelength 350 nm is incident on a metalsurface, the stopping potential of the photoelectrons is 0.500 eV. What is the threshold frequency
What is the magnitude of the vertical component of its velocity as it strikes the ground.
A bullet of mass mb is fired horizontally with speed v1 at a wooden block of mass mw resting on a frictionless table. The bullet hits the block and becomes completely embedded within it. After the bullet has come to rest within the block, the bloc..
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