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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 bicyclist starts a sprint with an initial speed of 2.0m/s, she moves a constant acceleration, how long did it take the bicyclist to complete the race
A constant friction force of 5 N acts on a 85 kg skier for 20 s. What is the skier's change in velocity
Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. determine the resistivity of the leaf tissue
An elderly sailor is shipwrecked on a desert island, but manages to save his eyeglasses. What is the magnifying power of the telescope he can construct with these lenses
A car moving at 78mi/hr approaches a yield sign 70m ahead. The driver slows the car with a constant acceleration of -4.5m/s2 by hitting the brakes. How long does it take the car to reach the yield sign
A satellite with a mass of 250 kg moves in a circular orbit 7.00 multiply.gif 107 m above the Earth's surface. What is the gravitational force on the satellite
Assuming the truck continues at constant speed from this minimum distance, for how long must the light remain yellow for the truck to completely clear the intersection before the light turns red.
Two stars 19 light-years away are barely resolved by a 165 cm (mirror diameter) telescope. How far apart are the stars
What is the pressure change in water going from a 3.0- cm-diameter pipe to a 2.1- cm-diameter pipe if the velocity in the smaller pipe is 5.0 m/s
Initially, a 2.00-kg mass is whirling at the end of a string (in a circular path of radius 0.750 m) on a horizontal frictionless surface with a tangential speed of 5 m/s. What is the instantaneous speed of the mass at the moment the string reaches ..
Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.7 mW. Find the peak magnetic field strengt
A 10cm long thin glass rod is uniformly charged to +50nC. A small plastic bead, charged to -5.3nC,is 4.4cm from the center of the rod
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