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A house is air conditioned using solar energy. Solar radiation heats a pressurized tank such that the temperature is maintained at 175o C. 1500 kJ must be extracted from the house to maintain the temperature at 24o C when the ambient temperature is 33o C. Determine the minimum amount of heat that must be extracted from the tank of water by any device built to accomplish the required cooling of the house.
Noise: An undesirable and unpleasant sound that makes harmful effects on our auditory system is known as noise.
A machine gun fires a bullet of mass 40 g with a velocity 1200 m/s The man holding it, can exert . a maximum force of 144 N on the gun. How many bullets can he fire per second at
Q. Write an expression for interest rate parity under the condition of imperfect asset substitutability. Answer: R = R* + (E e - E)/E + a where R denotes the risk premium tha
Explain Newton's First Law In 1665, at the age of 23, Newton developed his famous Laws of Motion. They are commonly known as Newton's first, second and third law. Aside from th
In an electric field difference among potential energy of two points A and B is described as equal to the amount of work done (by external agent) in moving a unit positive charge f
expression for the interference in transmitted light through thin films
What is Equatorial and polar diameter? The equatorial diameter. The equatorial diameter of the earth is 7920 miles in length and polar diameter is about 27 miles shorter than the
ELECTROMOTIVE FORCE – EMF: To make use of electricity by provision of an electric current, the potential different must be maintained. That is, the positive and negative charg
help by post offoce box explan rasistance of a wire
The collision between a photon and a free electron was first explained by which of the following scientists? a) Einstein b) Heisenberg c) Compton d) Bohr An
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