Determine speed by which the arrow leave the bow
An archer puts a 0.30-kg arrow to the bowstring. An average force of 201 N is exerted to draw the string back 1.3 m. Assuming that all the energy goes into the arrow, with what speed does the arrow leave the bow?
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In a water heating system, cold water at 5 C flowing at a rate of 5 kg/s is mixed adiabatically with hot water at 80 C flowing at a rate of 2 kg/s, state the assumptions.
A 40-year-old manager, at a prominent legal firm in L.A., experiences abdominal pain post lunch. He goes to the restroom a couple of times, but continues to experience pain and cramps.
The capacity of an elevator is 10 people or 1630 pounds. The capacity will be exceeded if 10 people have weights with a mean greater than 1630/10=163 pounds.
Determine all of the state points and the efficiency. What is the temperature, pressure, and enthalpy of all states(1,2,2a,2b,3,4)?
a) What is the velocity of the block after it leaves the spring but before it gets to the incline? b) How far up the incline (along the hypotenuse of the triangle) does the block travel?
For a 5-acre wheat field the average number of field mice is 12. 1. Find the probability that more than 2 field mice are in a randomly selected acre? 2. Determine how many acres need to be scanned such that the probability of finding the first mou
In a combustion reaction, one molecule of a hydrocarbon produced nine molecules of carbon dioxide and eight molecules of water. How many molecules of oxygen (O2) were consumed?
Bruce places a 2.0kg block over a small hole on a table. He then puts a gun under the table and shoots a 35.0g bullet into the block where it lodges. If the block rises1.3m above the table, how fast was the bullet going when it left the gun?
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