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A 8 g handball moving with a speed of 14m/s strikes a wall at an angle of 48 degrees with the horizontal and then bounces off with the same speed at the same angle. it is in contact with the wall for 6.7ms.
What is the magnitude of average force exerted by the ball on the wall?
When the three blocks in the figure below are released from rest, they accelerate with a magnitude of 0.375 m/s2. What is the coefficient of kinetic friction between block 2 and the table
You have a converging lens with a focal length of 0.85 m, and wish to construct a refracting telescope with an angular magnification of âˆ'45. what should be the focal length of the second lens
A copper rod 83.0 cm long and with a diameter of 1.3 cm is used to poke a fire. What is the rate of the heat flow through the rod
Work out the buoyant force due to the surrounding air on a man weighing 800 {rm N}. Imagine his average density is the same as that of water, and surrounding air temperature is 0 rm ^circ C.
A resistance thermometer which measures temperature by measuring the change in resistance of a conductor, When the device is immersed in a vessel containing melting indium, its resistance increases to 76.8 ohms. From this information, find the melt..
At a factory, a noon whistle is sounding with a frequency of 497 Hz. As a car traveling at 84km/h approaches the factory, driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change i..
A 6-{\rm kg} bucket of water is being pulled straight up by a string at a constant speed. At a certain point the speed of the bucket begins to change. The bucket now has an upward constant acceleration of magnitude 3 \rm{m/s^2}. What is the tension i..
A ball with a horizontal speed of 1.25m/s rolls off a bench 1.00m/s above the floor. how long does it take to reach the floor.How far from a point on the floor directly below the edge of the bench would the ball land.
question a cubical box of widths lx ly lz l 4.82 nm contains eight electrons. what is the energy of the ground
A rock is tossed straight up with a velocity of 40.0 m/s.When it returns, it falls into a hole 11.5 m deep. What is therock's velocity as it hits the bottom of the hole?
Hearing damage may occur when a person is exposed to a sound intensity level of 90.0 dB for a period of 9.00 hours, How much sound energy is incident on the eardrum during this time
A velocity selector has an electric field of magnitude 2500 N/C,directed vertically upward, and a horizontal magnetic field that is directed south. Charged particles, traveling east at a speed of7.27 x 103 m/s, enter the velocity selector and are ..
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