What is the force exerted on the foot
A barefoot field-goal kicker imparts a speed of 30 m/s to a football at rest. If the football has a mass of 0.50 kg and time of contact with the football is 0.025 s, what is the force exerted on the foot?
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Determine the average reaction rate between 600 and 1200seconds. Also determine the instantaneous rates at 600 secand 1800 sec.
A 2 000 kg sailboat experiences and eastward force of 3 000 N by the ocean tide and a wind force against its sails with magnitude of 6 000 N directed toward the northwest (45 degrees N of W). What is the direction of the resultant acceleration?
At the moment when the valves are closed on the radiator of a steam-heating system. Calculate the heat transfer from the steam.
Rita accelerates a 0.40 kg ball from rest to 9.0 m/s during the 0.15 s in which her foot is in contact with the ball. What average force does she apply to the ball during the kick?
Derive expressions for the work and heat transfer per unit mass of gas for each process in terms of the temperatures and pressures at each state and the thermodynamic properties cp, cv, and R.
Two blocks, joined by a string, have masses of 6.0 and 9.0 kg. They rest on a frictionless horizontal surface. A 2nd string, attached only to the 9 kg block, has horizontal force = 30 N applied to it. Both blocks accelerate. Find the tension in th
Vanadium crystallizes in a body-centered cubic lattice (the V atoms occupy only the lattice points). How many V atoms are present in a unit cell?
If the two-block system accelerates at 0.5 m/s2, what is the tension in the second string attached to the 8 kg mass?
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Dr. Smith is interested in determining whether male college students who have a significant stuttering problem are also likely to be introverted.
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