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Q. At t = 0, a wheel rotating about a fixed axis at a constant angular deceleration of 0.83 rad/s2 has an angular velocity of 2.5 rad/s and an angular position of 9.9 rad. What is the angular position of the wheel ater 4 s?
Q. A uniform solid disk with a mass of 28.3 kg and a radius of 0.514 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk, as the drawing illustrates.
The loaded cab of an elevator has a mass of 1.7 x 103 kg and moves 239 m up the shaft in 19 s at constant speed. At what average rate does the force from the cable do work on the cab.
Kelli weighs 417 N, and she is sitting on a playground swing that hangs 0.44 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.00 m above the ground. Imagine that air resistance is negligible.
Extimate the thickness of a glass at a bright fringe and the Brewster's angle for light traveling from air to glass.
What is the frequency of ultrasound in a medium if he wave length is 3.0 x 10^-3 m and velocity is 1300 mm/ms.
A hiker walks 3.50 km at an angle of 45.0 degrees north of west. After that the hiker walks 1.5 km south. What is the magnitude and direction of hiker's totally displacement.
What is the net electric flux through the spherical surface
At what angle have to the laser beam in the diagram be aimed at mirrored ceiling in order to hit the midpoint of the far wall? The length of the room is a=4.9 m and its height is b=3.00 m.
The two forces in each pair could have different physical origins (for instance, one of the forces could be due to gravity, and its pair force might be due to friction or electric charge).
A plate carries a charge of -3.9 µC, while a rod carries a charge of +2.2 µC. How many electrons should be transferred from the plate to the rod, so that both objects have the same charge.
A motorist drives south at 30.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.80 min, and finally travels northwest at 30.0 m/s for 1.00 min. For this 6.8 min trip, how do you find the total vector, average speed and average velo..
What is fraction of the diameter of the Sun
A 4.40 kg block is pushed along a floor by a constant applied force that is horizontal and has a magnitude of 40.0 N. it gives the block's speed v versus time t as the block moves along an x axis on the floor. The scale of its vertical axis is set by..
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