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Question: A uniform bar of radius of gyration k about its center of gravity is suspended horizontally by two vertical strings of length h, at distances a and b from the mass center. Prove that the bar will oscillate about the vertical line through the mass center, and determine the frequency of oscillation.
A 2 kg ball on a string is rotated about a circle of radius 10 m. The maximum tension allowed in the string is 50 N. What is the maximum speed of the ball?
In an emergency, you need to run a radio that uses 39.3 W of power when attached to a 16.0 V power supply, how many series resistors should you use
question an aircraft has a lift-off of 120kmh. a what minimum constant acceleration does the aircraft require if it is
At 12:00 p.m., a woman drives at a constant velocity of 50 km/h north for 1 hour, accelerates at a uniform rate for 20 minutes until she reaches a velocity of 100 km/h north, maintains the same velocity for another 20 minutes, accelerates (constant r..
Find the speed of a satellite moving in a circular orbit just above the surface of The Earth. The Earth has a radius of 6.38 106 m and a mass of 5.97 1024 kg
A 0.20 kilogram ball is thrown straight up into the air with an initial speed of 20m/s. Calculate the momentum of the ball at the halfway to its maximum height
A linear charge density \lambda(x) =4 nC/m * |x| is distributed on the x axis from x=-0.4 m to x =+0.4m. What is the electric field vector at the point
Nichrome wire of cross-sectional radius 0.758 mm is to be used in winding a heating coil. compute the length of the wire you must use to wind the coil?
As part of an exercise routine a 47.0 kg person climbs a set of stairs. Each stepis18.0 cm high and thereare 78 steps in the staircase. Assuming the work done coming down the staircase is negligible, howmany times must this person climb the staircase..
A flat sheet is in the shape of a rectangle with sides of lengths 0.400 m and 0.600 m . The sheet is immersed in a uniform electric field of magnitude 74.5 N/C that is directed at 20 degrees from the plane of the sheet. Find the magnitude of the e..
he-ne lasers are often used in physics demonstrations. they produce light of wavelength 633 nm and a power of 0.700 mw
In the two-slit experiment, the distance between the slits and the screen is 1.1 m and the distance between the slits is 0.040 mm. what is the distance between the adjacent bright fringes
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