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A 12 kg- hammer strikes a nail at a velocity of 8.5m/s and comes to rest in a time interval of 7.7 m/s . What is the impulse given to the nail. What is the average force acting on the nail?
Two 3.0 ?C charges lie on the x-axis, one at the origin and the other at 25 m. What is the potential at this third point relative to infinity
A 20t space craft leaving the dock of a space stationmakes a 12s engine burn. find the final speed of the space craft with respect to the station
A small, 200g cart is moving at 1.60m/s on an air track when it collides with a larger, 2.00kg cart at rest. What is the speed of the large cart after the collision
A more realistic car would cause wheels to spin in a manner that would result in the ground pushing it forward with a steady force.
A 51.0-g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at 21.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.75 ms,
You are driving down a straight road at speed of 90 km/h and see another car approaching you at speed of 110 km/h along the road, how fast is the other car approaching you
q1. if a disco disk is rotating with a person on it on the outer side then if he moves inside towards the center the
This magnetic field accelerates the electron in a circular motion. What is radius of the circle. The final situation is observed to be all water at 18°C. What was the mass of the ice cube.
A capacitor with air between its plates is charged to 70 V and then disconnected from the battery. What is the dielectric constant of this glass
q1. in a crash test a 1300 kg car slams into a concrete wall at 18.8 ms and comes to rest in 0.275 s. a find the
A 2.40-g bullet embeds itself in a 1.30-kg block, which is attached to a spring of force constant 740N/m, Find the time for the bullet-block system to come to rest
A heat engine has a useful work output of 4.0 kJ and expels 8.0 kJ of exhaust energy in each cycle. what is the engine's thermal efficiency
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