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rod of length 56.0 cm and mass 2.30 kg is suspended by two strings which are 40.0 cm long, one at each end of the rod. Find the magnitude of the initial acceleration of the end B when the string is cut.
The generator at a power plant produces AC at 23,000 V. A transformer steps this up to 335,000 V for transmission over power lines. how many turns must there be in the output coil
A disk of radius 10 cm, initially at rest, begins rotating about its axis with a constant angular acceleration of 8.2 rad/s2. compute the angular velocity of the disk
What must be the magnifying power of the eyepiece if the total magnification of the specimen is 100X
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1330 Hz. What is the speed of the bird
A ‘U' shaped pipe contains a liquid that is sealed at both ends by pistons. Determine the downward force
An electron and a anti-electron (Positron) circle eachother at a distance of 1.00x10^-19m. What is the electrostatic force between the particles? What is the potential energy of the system? Is this energy positive or negative?
A pair of slits, separated by 0.170 mm, is illuminated by light having a wavelength of ? = 569 nm. What is the path difference for the two slits at the location y
Light of wavelength 700 nm is incident on the face of a fused quartz prism (n = 1.458 at 700 nm) at an incidence angle of 72.4°. Calculate the angle of refraction at the first surface
A large storage tank, open to the atmosphere at the top and filled with water, calculate The diameter of the hole
A fox fleeing from a hunter encounters a 0.690 m tall fence and attempts to jump it. By how much does the fox clear the fence
a steel oil pipeline spans a river gorge 100 m wide. the inside wall is electrically heated to reduce the viscosity of the oil to ease pumping, determine the heat lost per day for the pipe in calories
A crate with a mass of 171.5 kg is suspended from the end of a uniform boom with a mass of 80.3 kg. The upper end of the boom is supported by a cable attached to the wall and the lower end by a pivot (marked X) on the same wall. compute the tensio..
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