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A 6.0 kilogram object undergoes an acceleration of 2.0m/s.
(a) Find the magnitude of the resultant force acting on it?
(b) If this same force is applied to a 4.0 kilogram object, find what acceleration is produced?
A torque of 2.2 N.m is applied to a spherical shell of radius 0.25 m. what is the mass of the disk
A football is kicked from ground level and lands 57.0 m downfield. What max heigh above the ground does the ball reach
You shine a laser on a plastic prism made from an unknown material and measure the angles relative to the normal that the light takes both inside and outside the medium. What is the index of refraction of the plastic object
Two steel wires of the same length, one with radius r and the other with radius 3r, are connected together, end to end, and tied to a wall. How far does the point where the two wires meet move
A 215.0 g piece of lead is heated to 89.0oC and then dropped into a calorimeter containing 500.0 g of water that initally is at 21.0oC. compute the final equilibrium temperature of lead and water
A uniform beam 3m long has weights 20N and 30N attached to itsends. If the weight of the beam is 50N find the point on the beamwhere a support should be placed so that the beam will resthorizontally.
A compact disc rotates from rest up to an angular speed of 31.4 rad/s in a time of 0.892 s. What is the magnitude of the tangential acceleration
A diesel engine performs 2090 J of mechanical work and discards 4125 J of heat each cycle. What is the thermal efficiency of the engine?
A spring-loaded pellet gun is designed to fire 2.50 g projectiles horizontally at a speed of 50.7 m/s. What maximum force is required to load the gun
A glass is half-full of water, by a layer of vegetable oil (n = 1.47) floating on top. A ray of light travelling downward during the oil is incident on the water at an angle of58.0°. Decide the critical angle for the oil-water interface
As a baseball is being thrown, it goes from 0.0 to 40.0 m/s in 0.25 s. What is the acceleration of the baseball
A high-voltage power line carries a current of 110 A at a locationwhere the Earth's magnetic field has a magnitude of 0.59 G andpoints to the north, 72 degrees below the horixontal.
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