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A 75 kg mass is to be hanged with help of a single string attached to wall above on both sides. The maximum tension can be 2600 N. Find out the extension in the string for such a stable arrangement.
question1a dockworker applies a constant horizontal force of 76.0n to a block of ice on a smooth horizontal floor. the
X-rays having an energy of 300 keV undergo Compton scatteringfrom a target. The scattered rays are detected at 37 degreerelative to the incident rays. determine the energy of the scattered x-ray
A circular conducting loop is held fixed in a uniform magnetic field that varies in time according to B(t) = B0exp(−a t) where t is in s, a is in s−1 and B is the field strength in T at t = 0. At t = 0, the emf induced in the loop is 0.0661 V. At t =..
A rocket has an initial mass of 28,000 kg, of which 20 percent is the payload. It burns fuel at a rate of 185 kg/s and exhausts its gas at a relative speed of 1.8 km/s.
For a demonstration, a professor uses a razor blade to cut a thin slit in a piece of aluminium foil. When she shines a laser pointer (?=680nm) during the slit onto a screen 5.5m away, a diffraction pattern appears. The bright band in the center of th..
How many 112 W lightbulbs can you use in a 100 V circuit without tripping a 15 A circuit breaker? (The bulbs are connected in parallel, that means that the potential difference across each lightbulb is 100 V.)
Where does the laser beam emerge from the block and what is the angle between the emerging ray and the normal to the interface?
A wire carries a current of 0.651 A. This wire makes an angle of 56.6° with respect to a magnetic field of magnitude 4.64E-5 T. What is the length of the wire
two circular coils carry the same current but one coil has twice the diameter of the other one. if the larger coil
1. Suppose that Galileo fired a cannon in a horizontal direction from a height of 50 feet above level ground, and found that the cannon ball hit the ground 3000 feet away. (a) What was the speed of the cannon ball when it left the cannon?(b) ..
A certain string just breaks when it is under 400N of tension. At approximately what speed will the string break
A conducting spherical shell of radius Ri has a net charge Q on it. Using Gauss's law, find the electric field between the two shells
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