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A weather vane initially at rest has a moment of inertia of 0.107 kg · m2 about its axis of rotation. A 33.5 g piece of clay is thrown at the vane and sticks to it at a point 18.5 cm from the axis. The initial velocity of the clay is 20.5 m/s, directed perpendicular to the vane. Find the angular velocity of the weather vane just after it is struck.
The big mall near Sally and Amy's city has extended their operating hours to accommodate the huge crowds expected for the After Thanksgiving Sale. How long were they in the mall
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
a 80 kg student consumes 2500 cal each day and stays the same weight. one day he eats 3500 cal and wanting to keep from
Gabriela, hunting for her favorite wooden horse, is running on the ground around the edge of a stationary merry-go-round. find the shortest time it takes for Gabriela to catch up with the horse
How many electrons would need to be transferred in order to balance these two forces?
an axon is the relatively long tail-like part of a neuron or nerve cell. the outer surface of the axon membrane
a proton moves at a speed of 1605 ms in a direction perpendicular to a magnetic field with a magnitude of 0.58 t. if
the electrical resistance on a long piece of wire is r. the wire is streatched to be twice as long and because the
Four charges are located in the x-y plane as follows: q@(0,0); 3q @ (a,0); 2q @ (0,a) and -4q @ (a,a). What is the electric force at the center of this distribution
The water was originally at 0°C. The specific heat of water = 1.00 kcal/kg×°C, The original temperature of the ice was:
One sphere is negatively charged, with net charge -2.25 mu C, and other sphere is positively charged, with net charge 4.00 mu C. The charge is uniformly distributed within the volume of each sphere.
There is a curling disc of mass m =20dkg at rest on the ice.Another disc of the same kind collides head-on (b=0) into it at aspeed of v =20m/s. what is the speed of the two discs after the collision
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