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Q1. In a skating stunt called as "cracking-the-whip," a number of skaters hold hands and form a straight line. They try to skate so that the line rotates about the skater at one end, who acts as the pivot. The skater farthest out has a mass of 70.0 kg and is 6.35 m from the pivot. He is skating at a speed of 7.50 m/s. find out the magnitude of the centripetal force that acts on him.
Q2. A uniform steel beam has a mass of 1640 kg. On it is resting half of an identical beam. What is the vertical support force at each end?
If the magnetic field strength is 0.845 T, what is magnitude and direction of the magnetic force on the wire between the poles
What travel time is required for the landing
The George Washington bridge, that spans the Hudson River between New York and Jersey, is 4670 feet long and is made out of steel, How much does it expand in length between winter and summer.
Assume unpolarized light of intensity 197 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 37.0°. What is the light intensity reaching the photocell?
The electric field points radially outward at all points within the sphere (and outside too, for that matter). What is the strength of the electric field at a distance r from the center, inside sphere.
On a very muddy football field, a 100 linebacker tackles a 75 halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.9 north's and the halfback is sliding with a velocity of 7.9 east's.
The K-shell ionization energy of copper is 8979 eV. The L-shell ionization energy is 951 eV. Determine the wavelength of the Kα emission line of copper. What should be the minimum voltage be on an x-ray tube with a copper target in order to see the K..
What is size of the gravitational force on the moon
Find the work function of the emitting surface and the wavelength of the second source. Determine the net work done on the piano.
What is the turntable rotation angular velocity
Determine the simple harmonic motion of the spring what ac velocity is ball moving
What is lemmings kinetic energy
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