Why the quantity of coal must be burned to heat
The heat of combustion for a sample coal is 23.0 Kj/g. What quantity of coal (in grams) must be burned to heat 500g of water from 20C to 95C. The specific heat capacity of water is 4.184 JC-1g-1. Is your answer reasonable?
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Use the following information about a survey of a product. forty percent of people surveyed were males. Among males 75% were satisfied with the product. Among females only 30% were satisfied with the product . find the following:
The pulley has the shape of a uniform solid disk of mass 1.90 and diameter 0.600 . After the system is released, find the horizontal tension in the wire.
Suppose that the company above is expected to finish the above project in 7 months. The company is to receive 10,000 dollars for each month they finish earlier, but will have to pay 25,000 dollars for each month they finish later than the expected
Find the Standard form of the quation of the ellipse with the given characteristics and center at the origin. Find the Standard form of the quation of the ellipse with the given characteristics.
If the ball is in contact with the wall for 0.0112 s, what is the average acceleration of the ball while it is in contact with the wall?
A special effects creator wants to generate an interference pattern on a screen 7.0m away from a single slit. She uses 645nm light and hopes to get the second dark fringe exactly 52cm from the middle of the central bright maximum. What width of sl
By definition, a fixed point for the function f is a number x0 such that f(x0)=x0. For instance, to find any fixed points for the function f(x) =3x-2, we write 3x0 -2 = x0.
How many liters of chlorine gas at 200 degrees celcius and .500 atm can be produced by the reaction of 12 grams on MnO2 with HCl as follows? MnO2+4HCl reacts to give MnCl2+2H2O+Cl2
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