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Q. A 46g Super Ball travelling at 26m/s bounces off a brick wall and rebounds at 16m/s. A high-speed camera records this event. If ball is in contact with the wall for 3.45ms, what is the magnitude of the average acceleration of the ball throughout this time interval?
Q. A dynamite blast at a quarry launches a rock straight upward, and 2s later it is rising at a rate of 15m/s. assume air resistance has no effect on the rock, analyse its speed (a) at launch and (b) 5s after launch.
A 68.0 kg person escapes from a burning building by jumping from a window 25m above a catching net. Assuming that air resistance exerts a 95N force on the person during the fall, determine the person's velocity just before hitting the net.
Sisyphus was a character in Greek mythology that was doomed in Hades to push a boulder to the top of a steep mountain. When he reached the top, the boulder would slide back down the mountain and he would have to start all over again.
A block is given an initial velocity of 5 m/s up a frictionless 19° incline. How far up the incline does the block slide before coming (momentarily) to rest.
A car battery stores about 3.00 MJ of energy. If all this energy were used to generate a uniform electric field of 27.0 kV/m, what volume would it occupy.
Two particles are fixed to an x axis: particle 1 of charge q1 = 1.86 x 10-8 C at x = 27cm and particle 2 of charge q2 = -3.63q1 at x = 77.7cm. At what coordinate on the x axis is the electric field produced by particles equal to zero.
Stone with a mass of 0.800 {rm kg} is attached to one end of a string 0.900 {rm m} long. The string will break if its tension exceeds 65.0 {rm N}. The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string rem..
A uniform plank of length 5.70 m and weight 215 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 452 N walk on the overhanging part of the plank before it just be..
Calculate the magnitude of B when the force on wire. The time constant of an RC circuit is 5.5 s. How much time t is required for the capacitor (uncharged initially) to gain one-half of its full equilibrium charge.
Find the charge on sphere A. How far from the dog will the suitcase land.
A cord of length 1.0m is fixed at both ends. Its mass per unit length is 1.2g/m and the tension is 11N. What is the frequency of fundamental oscillation
An airplane flies 200 km due west from city A to city B and after that 295 km in the direction of 26.5° north of west from city B to city C.
What is the wavelength of the light in the glass
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