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A bead of mass m = 3.10 kg is released from point A and slides on the frictionless track as shown in the figure below. The height of A is ha = 6.70 m.
(a) Determine the bead's speed at points B and C.
point B_____m/s
point C_____m/s
(b) Determine the net work done by the force of gravity in moving the bead from A to C.
______J
A pendulum of mass 0.25 kg and length L= 1.0 m is attached to a line which is fixed at point P, determine the force of tension in the line
An aluminum wire has a cross-sectional area of 2.70x 10^-6 m^2 and carries a current of 7.50 A. The mass density of aluminum is 2.70 g/cm^3. find the average speed of the electons in the wire.
A small motor draws a current of 1.75 A from a 120.0 V line. It costs $35.81 to operate the motor for 4.00 hrs at $0.0600 /kWh, What is the power output of the motor
A diffraction grating has 1380 lines/mm. You desire to detect two sodium lines at 589.0 nm and 589.6 nm with a detector. how far away should the dectector be placed from the grating
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A box is sliding with a speed of 4.50 m/s on a horizontal surface when, at point P, it encounters a rough section. What is the coefficient of friction at the stopping point
A 685 kg car stopped at an intersection is rear-ended by a 1470 kg truck moving with a speed of 12.5 m/s. find the final speed of both vehicles after the collision
A bicycle wheel of mass M (assumed to be concentrated at its rim) and radius R is mounted horizontally so it may turn without friction on a vertical axle. A dart of mass mo is thrown with velocity vo above and sticks in the tire.
At rest when constructed, the ring is set rotating about its axis so that the people inside experience effective free-fall acceleration equal to g. The rotation is achieved by firing two small rockets attached tangentially to opposite points on the r..
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