Determine the speeds after the collision
Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If the speed of ball 1 was initially 3.00 m/s, and that of ball 2 was 4.00 m/s in the opposite direction, what will be their speeds after the collision?
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Two independent samples of size 20 each are taken to test for a difference in the corresponding population means. The sample means differ by 5, and the pooled variance is 15. What is the value of the test statistic? Give your answer to four decima
Write the expression for the thermodynamic Ka for acetic acid (CO3COOH); for example. using activities. Write out the concentration based constant as a function of Ka (thermodynamic) and the individual activity coefficients (y) gamma for the ions
A new model of mass 1200 kg takes 0.10 s from the time of impact until it is brought to rest. (Take the positive direction to be the original direction of motion.)(a) Calculate the average force exerted on the car by the barrier.
Determine the pump efficiency. Pump efficiency is defined as the ratio of the power output from the shaft to the power input. Assume there is no loss due to shear (Wshear = 0, except Wshaft), and there is no Wother either.
The value of the test statistic for testing if one population mean is larger than the other, based on samples of size 24 and 19, is 2.45. What is the p-value for the test? Give your answer to 4 decimal places.
A 10ft3 closed rigid container contains 1ft3 of liquid water and 9ft3 of water vapor at 70 Fahrenheit. Heat is added until the fluid becomes a single phase: What is the initial pressure in the tank?
What kinds of intermolecular forces must be overcome during the following phase changes. check all that apply. there may be more than one for each.
An explosion breaks an object into two pieces, one of which has 1.5 times the mass of the other. If 7900 J were released in the explosion, how much kinetic energy did each piece acquire?
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