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?
Two 1 kg balls move away from each other, one traveling 1 m/s to the right, the other 10 m/s to the left. What is the magnitude of the total momentum of the system?
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.
While the piston mass is 30 kg, its area is .003m^2, and the ambient pressure is 100 kPa. The pin is then removed and the H2O expands rapidly and adiabatically. What is the final state of the H2O?
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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Which of the following best describes the rationale of those public officials who are promoting the policy referenced in the title of the Texas Tribune article?
Problem: Political messaging and how a policy is framed to one's supporters and to the general public are important.
What are 2 or 3 advantages of conducting policy evaluations in criminal justice? What is the significance of policy research in policy evaluation?
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The control model is based on strict authority and rigid rules. It emphasizes discipline, surveillance, and limited privileges for inmates.
Question: Which of the following statements illustrates the impact of the reform era (1900-1920) on US political parties?