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In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 2.1 m/s. However, this speed is inadequate to compensate for the kinetic friction between the puck and the ice. As a result, the puck travels only one-half the distance between the players before sliding to a halt. What minimum initial speed should the puck have been given so that it reached the teammate, assuming that the same force of kinetic friction acted on the puck everywhere between the two players?
If a pitcher throws a 3 kg ball at 30 m/s to a batter who hits it straight back at him using 58500 N for 0.003 seconds, what is the velocity of the ball coming back to the pitcher
q. a woman walks 252. m in the direction 65.0deg east of north then 212. m directly east.a find the final displacement
q1. for each of the situations below the charged particle enters a region of uniform magnetic field. illustrate a
question1a offer an instance of one alternative renewable energy source.b write down an energy transformation equation
A 10.0 kg object oscillates at the end of a vertical spring that has a spring constant of 1.90 104 N/m. Calculate the frequency of the dampened oscillation
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water while a large ball requires a lot of force. calculate the diameter of the ball
Under normal conditions, humans radiate electromagnetic waves with a wavelength of about 9.0 microns. What is the frequency of these waves
Two adjacent natural frequencies of an organ pipe are found to be 450 Hz and 495 Hz. What is the length of the pipe
A plank 2.00 cm thick and 12.4 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m, find the shear modulus of the wood
A speedboat starts from rest and accelerates at +2.01 m/s2 for 7.25 s. At the end of this time, Find the total displacement of the boat
A 250 kg weather rocket is loaded with 100kg of fuel and fired straight up. It accelerates upward at 32m/s2 for 34 s, then runs out of fuel. overlook any air resistance effects.
An Australian emu is running due east in a straight line at a speed of 12.5 m/s and slows down to a speed of 11.4 m/s in 7.3 s. (a) What is the direction of the bird's acceleration? north south east west.
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