Find the new speed right after separation
A two stage rocket of mass 751kg traveling at speed 709m/s separates into a first stage of mass 236kg moving at zero speed and a final stage moving at a new speed - find this new speed right after separation.
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If the plant operated with a condenser pressure of 20kPa, calculate the thermal efficiency and the net work output for the cycle.
Atmospheric pressure is around 1.010×105 Pa. Think about the air pushing on a flat, circular glass window which has a radius of 0.0830m. What is the force with which the air is pushing on one side of the glass?
As people get closer to retirement, their investment goals often change. Assume you are not 45 and have accumulated $110,000 in a retirement account. In this situation, what type of mutual funds would you choose? Why?
The average number of tadpoles per gallon of water in Rocky Mountain National Park is believed to be 13, and is normally distributed. You collect 10 one gallon samples and find the following numbers of tadpoles:
Carter Motor Company claims that its new sedan, the Libra, will average better than 21 miles per gallon in the city. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state th
Kenny expects that the machine necessary to produce the yogurt will cost $250,000, last for five years and have a salvage value of $20,000 at the end of the fifth year.
A skier of mass 105 kg travels down a ski trail of height 240m. If the skier has a speed of 40 m/s at the bottom of the hill, what is the work done by friction on the skier? (Assume the skier starts at rest at the top of the hill) please show your
A fan is used to blow air over the heated cylinder surface in a cross flow at an average velocity of 50 m/s. Estimate the surface temperature now. The heating is stopped and the cylinder left in the airflow of 50 m/s velocity.
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