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A spinning top initially spins at 16rad/s but slows down to 12rad/s in 18s, due to friction. If the rotational inertia of the top is 0.0004kg.m2, by how much the angular momentum of the top changes?
A 0.15 kg baseball moving at +20.00 m/s is slowed to a stop by a catcher who exerts a constant force of -385 N. A) how long does it take this force to stop the ball? B) how far does the ball travel before stopping?
Travel past the Earth in a straight line
Light beams A and B are depositing the same amount of energy per square meter on a surface, but the wavelength associated with beam A is longer than that associated with beam B. The photon flux (number crossing a unit area per unit time) is:
A uniform soda can of mass 0.140 kg is 12.00 cm tall and filled with 1.31 kg of soda. After that small holes are drilled in the top and bottom (with negligible loss of metal) to drain the soda.
An object is placed 2.0 cm from a converging lens with focal length 1.5 cm. Determine the location of the final image
A thin horizontal 10cm x 10cm copper plate which is 1 mm thick has 1010 excess electrons. If the electrons are uniformly distributed, what are the strength and direction of the electric field a) 0.1 mm above the top surface of the plate? b) in the ce..
A simple pendulum is 0.26 m long. At t = 0 it is released from rest starting at an angle of 11°. Ignore friction. (Utilize g =9.8 m/s2.) What will be the angular position of the pendulum at t = 0.65 s? What will be the angular position of the pendulu..
Block Sliding into Spring A block of mass m = 5.5 kg is released from rest at a height of H = 3.0 m on a curved frictionless ramp. What is the maximum height reached by the block
Two charges are placed on the x axis. One charge (q1 = +8.97mC (microC)) is at x1 = +3.40cm, Calculate the net electric field at x = 0cm
a circular conducting ring is split into two semi-circles. the top half has a positive charge q evenly distributed and
An unspecified force causes a 0.5-kg object to accelerate at 0.2 m/s2. If 0.3 kg is added to the 0.5-kg object and the force remains the same, what is the acceleration (in m/s2) of the heavier object?
a point charge of 10 microc is located at x -3.0 cm and a second point charge of -12 microc is located at x 4.0 cm.
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