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Determine the kinetic energy of the triangular plate of Prob. 18.16.Prob. 18.16. The triangular plate shown has a mass of 7.5 kg and is welded to a vertical shaft AB. Knowing that the plate rotates at the constant rate ω = 12 rad/s, determine its angular momentum about
(a) point C,
(b) point A
The planet Neptune orbits our Sun at an average distance of 4.50 * 10^9 km.It's mass is 1.02 8 10^26 kg. The Sun's mass is 1.99 * 10^30 kg. What is the strength of the gravitational field at the "surface"of Neptune
Which one of the following situations results in the largestmagnitude torque acting on a rigid object?
A physicist wraps a long copper wire around a toilet paper roll and places the roll in a uniform magnetic field. The axis of the roll is aligned by the field. The radius of the roll is r = 5 cm and the strength of the field is B = 0.1 T. If the physi..
Sodium ions (Na+) move at 0.858 m/s through a bloodstream in the arm of a person standing near a large magnet. what would be the magnetic force on the arm
two steel wires of the same length one with radius r and the other with radius 2r are connected together end to end and
how do the temperature of combustion and the temperatures of collant and exhaust affect the efficiency of automobile
A river flows from south to north at 5.30 km/h. On this river, a boat is heading east to west perpendicular to the current at 7.90 km/h, determine how fast is this boat traveling
a charge of 2.73 microc is held fixed at the origin. a second charge of 2.73 microc is released from rest at the
A microphone in the ocean is sensitive to sounds emitted by porpoises. To produce a usable signal, sound waves striking the microphone must have an intensity of 10.7 dB. If porpoises emit sound waves with a power of 0.0491 W, how far can a porpois..
A student sitting on a frictionless rotating stool has rotational inertia 0.90 kg*m^2 about a vertical axis through her center of mass when her arms are tight to her chest. The stool rotates at 6.80 rad/s and has negligible mass.
The depth of the potential well for free electrons in a metal can be correctly determined with observing that the photoelectric work function is the energy necessary to remove an electron at the top of the occupied states from the metal;
A wedding ring (of diameter 1.7 cm) is tossed into the air and given a spin, resulting in an angular velocity of 12 rotations per second. The rotation axis is a diameter of the ring. Taking the magnitude of the Earth's magnetic field to be 4.3 10-5 T..
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