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A centrifuge in a medical laboratory rotates at an angularspeed of 3600 rev/min. When switched off, it rotates through50.0 revolutions beofre coming to rest. Find the constant angular accleration of the centrifuge.
Stars spend their time on the main sequence converting hydrogen into helium. There are two sets of reactions that can take place within a star, supporting the fusion process. Describe the two reaction chains or cycles used for hydrogen fusion and wha..
A movable piston having a mass of 7kg and a cross-sectional area of 6 cm2 traps 0.2 mol of an ideal gas in a vertical cylinder. The piston slides without friction in the cylinder. The outside of the cylinder is kept at atmospheric pressure, 1.013×..
Two cars of equal mass collide at right angles to each other in an intersection. Which car had the greater velocity before the collision
Bill measures the rate at which the clock in Sam's spaceship runs and finds that it is one-third the rate at which the same clock runs when it is at rest
q1. a 0.27 kg rock is thrown perpendicularly upward from the top of the cliff that is 32 m high. when it hits the
what is the meaning of a ground speed? Justify why the ground speed is different from air speed. Will there ever be conditions under which the ground speed and the air speed be the same
In determining the specific heat of a new metal alloy, 150g ofthe substance is heated to 400C and then placed in a 200g aluminium calorimeter containing 400g of water at 10C. If the final temperature of the mixture is 30.5C, what is the specific h..
Moving a charge from point A, where the potential is 310 , to point B, where the potential is 120 , takes 4.5×10?4 of work. What is the value of the charge
Illustrate w hat angular speed (in revolutions per minute) is needed for a centrifuge to produce an acceleration of 720 times the gravitational acceleration 9.8 m/s2 at a radius of 9.95 cm ?
mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy.
A glass flask whose volume is 1000.33 at 0 is completely filled with mercury at this temperature. Compute the coefficient of volume expansion of the glass
A beam of light traveling in air strikes a very smooth water surface in a glass bowl at an angle of incidence of 35 degrees. Prove that the emergent beam is parallel to the incident beam
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