Force exerted by the ball on the kickers foot
A barefoot field-goal kicker imparts a speed of 25 m/s to a football initially at rest. If the football has a mass of 0.38 kg and the time of contact with the ball is 0.011 s, what is the force exerted by the ball on the kicker's foot?
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A vehicle that has a 1000kg mass is situated at the top of a hill with a 10 degree incline. 1. What would be the gravitational potential energy relative to the hill bottom?
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Chloromethane, CH3Cl, arises from the oceans and frommicrobial fermentation and is found throughout the environment. Itis used in the manufacture of various chemicals and has been usedas a topical anesthetic.
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The freezing point of mercury is -38.8°C, is the only metal that is liquid at room temperature. What quantity of heat energy,in joules, must be released by mercury if 1.20 mL of mercury is cooled from 23.0°C to-38.8°C and then frozen t
The gas is allowed to expand until the pressure is 1 bar and the final volume is 0.02 m^3. Calculate (1) the molar mass of the gas and (2) the final temperature.
A cord holding them together is burned, after which the block of mass M moves to the right with a speed of 1.62 m/s. What is the speed of the block of mass m? Answer in units of m/s.
What is the two-sided 95% confidence interval for the population mean given the following sample: x=0,2,3,5?
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