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Q. During a circus performance, a 72 kg human cannonball is shot out of an 18 meter long cannon. If the human cannonball spends 0.95 seconds in the cannon, determine the average net force exerted on him in the barrel of the cannon.
Q. A motorcyclist is able to ride on the vertical wall of a bowl- shaped track as shown. his weight is counteracted by the friction of the wall on the tires. what force increase or decrease if he rides faster?
The index of refraction of air is 1, the index of glass 1.55 and the index of water 1.33. Characterize the air bubble as a point source.
At 500°C, the diffusion coefficient of Zn in brass is 4.10-17 m2.s-1. What is the flux of Zn moving down the rod.
The two forces in each pair could have different physical origins (for instance, one of the forces could be due to gravity, and its pair force might be due to friction or electric charge).
Write down the original position of the system
A car goes round a flat curve at a speed of 32 ms-1. If the radius of the curve is 200 m, find the minimum value for the coefficient of friction so that the car can go around the curve without skidding.
A 0.525 kg ball starts from rest and rolls down the hill with uniform acceleration, travelling 150 m throughout the second 10.0 rm s of its motion.
A parallel-plate capacitor is formed from two 1.0 {rm cm} times 1.0 {rm cm} electrodes spaced 2.4 {rm mm} apart. The electric field strength inside capacitor is 1.0times10^{6};{rm{N/C}}.
A student shoots spitball at the wall from a height of 1.50 meters. The spitball has an initial horizontal velocity of Vxo, other than has no vertical velocity component. The spitball lands on the ground 8 meters from where it was shot. What is the V..
A slab of marble is resting on the ground. It weighs 600 N and has the dimensions 0.1m x 0.2m x 1.0m. What is the greatest pressure that the slab can exert on ground.
Two circus performers, Jack and Jill, whose total mass is 120 kg, start a swing which is 5 m long such that initially the rope attached to their swing makes an angle of 36 degrees with the horizontal.
suppose that we could use the energy released when 5 g of antimatter annihilates 5g of matter to lift a mass 3 km from the Earth's surface. how much mass can we lift? answer in unites of kg.
A parallel-plate air capacitor with a capacitance of 236 has a charge of magnitude 0.13 on each plate. The plates have a separation of 0.33.What is the potential difference between the plates.
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