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An 8-kg ball rolling at 2 m/s when it bumps into a pillow and stops. What is the impulse?
A father racing his son has three-fifths the kinetic energy of the son, who has half the mass of the father. What is the original speed of the son
he potential difference between two parallel conducting plates in vacuum is 410 V. What is the kinetic energy of the alpha particle
A thin rod has a length of 0.292 m and rotates in a circle on a frictionless tabletop. The axis is perpendicular to the length of the rod at one of its ends. what is the change in the angular velocity of the rod
a ball of mass 1.00kg moves due east at 3.00 m/s. a ball of mass 2.00 kg moves due south at 2.00 m/s. they collide at the origin. what is the final velocity of the other ball
A skateboarder, with an initial speed of 5.0 m/s, rolls virtually friction free down a straight incline of length 19 m in 3.3 s. What is the angle of the incline
A spring-loaded pellet gun is designed to fire 3.50 g projectiles horizontally at a speed of 39.1 m/s. What maximum force is required to load the gun
A heart defibrillator delivering 400 J of energy by discharging a capacitor initially at 10,000 V has a capacitance of 8.00 µF, What is the voltage of the second defibrillator
The speed of sound does not depend on the loudness or the frequency of sound. Explain how temperature and humidity affect the speed of sound
A ball of mass 0.40 kg moving at 180 m/s east strikes a second ball, initially at rest of mass 0.500 kg. What is the final velocity of the second ball
Charge of uniform density (80 nC/m^3) is distributed throughout a hollow cylinder region formed by two coaxial cylindrical surfaces of radii 1.0 mm and 3.0 mm. Determine the magnitude of the electric field at a point which is 2.0 mm from the symmetry..
The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.64 m, Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point
An explosion breaks an object into two pieces, one of which has 1.80 times the mass of the other. If 10000 J were released in explosion, how much kinetic energy did each piece acquire.
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