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A small 4.50 brick is released from rest 3.00 above a horizontal seesaw on a fulcrum at its center, as shown in the figure below .Find the angular momentum of this brick about a horizontal axis through the fulcrum and perpendicular to the plane of the figure the instant the brick is released. Find the angular momentum of this brick about a horizontal axis through the fulcrum and perpendicular to the plane of the figure the instant before it strikes the seesaw.
A 78-kg person in a moving car stops during a car collision in a distance of 0.78m, Determine the speed of the person before the air bag opens up
What is the average force felt by a 0.06 kg tennis ball if it strikes the racket at a speed of 30m/s and leaves the racket with a speed of 50m/s in the opposite direction
A loop of wire in the shape of a rectangle rotates with a frequency of 162 rotation per minute in an applied magnetic field of magnitude 3 T, Find the maximum current through the bulb
If the inside of the vessel is maintained at atmospheric pressure 1.013 × 105 Pa, what is the net force on a porthole of diameter 16.9 cm
What will be the resulting speed of the boat. A 74 kg fireman slides down a 4-m pole by applying a frictional force of 384 N against the pole with his hands. If he slides from rest, how fast is he moving once he reaches ground.
What force (magnitude) does the spring exert on the object while it is a distance 2.90×10-2 below equilibrium position, moving upward.
A golf ball of mass 0.045 kg is hit off the tee at a speed of 49 m/s. The golf club was in contact with the ball for 4.7 x 10-3 s. Find the magnitude of the impulse imparted to the golf ball
During an electrostatic field experiment, you assume that the electric field lines are in the plane of the paper, What condition determines the accuracy of this assumption
Water drives a waterwheel (or turbine) of radius R = 3.0 m as shown in the figure. The water enters at a speed v1 = 6.5m/s, What is the torque the water applies to the waterwheel
Monochromatic light falls on two very narrow slits 0.050 mm apart. Determine the wavelength (in nm) and frequency of the light
A Texas cockroach of mass 0.123 kg runs counterclockwise around the rim of a lazy Susan (a circular disk mounted on a vertical axle) that has a radius 16.6 cm, What is the angular speed of the lazy Susan after the cockroach stops
A flat sheet of ice (n = 1.309) has a thickness of 1.6cm. It is on top of a flat sheet of crystalline quartz (n = 1.544) that has a thickness of 0.86cm. Light strikes the ice perpendicularly and travels through it and then through the quartz. In t..
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