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A family is considering replacing their hot water heater. Aconventional electric hot water heater is $200 includinginstalation. his brother and his wife now move in and they estimatethat a family of four uses an average of 300 liters of hot water aday, which will require $350 worth of electricity each year. Theinstalled cost of small solar water heater system is $1,400 andwill cost $60 per year on the average to operate(electricity topump the water through the panels and to augment solar heating oncloudy days. Both systems will have a $0 salvage value at the endof their useful lives. Based on a MARR of 12%, determine how long the soalr system must operate to make it as economical as theelectric system.
question1a 30-kg girl is bouncing on a trampoline. throughout a certain interval after leaving surface of the
The initial state of a quantity of monatomic ideal gas is P=1atm V=1liter and T=373K. Calculate the total work done on or by the gas.
How many coulombs (C) of positive charge are there in 1.32 kg of plutonium, given that its atomic mass is 244 and each plutonium atom has 94 protons
Four charges, Aq, Bq, Cq, and Dq (where q = 2.25 ×10?7 C), sit in a plane at the corners of a square whose sides have length d = 82.5 cm. A charge, Eq, is placed at the origin at the center of the square.
A 5 kg mass attached to a horizontal spring is pulled from its equilibrium position by 4 m and let go. find is the maximum velocity of the mass
The tires on a new compact car have a diameter of 2.0 feet and are warranted for 58,000 miles. Compute the angle through which one of these tires will rotate during the warranty period
The steering wheel of a car has a radius of 0.19 meter, while the steering wheel of a truck has a radius of 0.29 meter. Find the ratio of the torque produced by this force in the truck to the torque produced in the car
A baseball is hit at an angle of 27.5 degrees and just clears the right field fence 87 meters away. What was the overall initial velocity of the baseball
M1 is five times more massive than M2. One force acts on the hanging mass, but the net force acts on both masses. Once you have the acceleration, you can compute the distance.
If a pitcher throws a 3 kg ball at 30 m/s to a batter who hits it straight back at him using 58500 N for 0.003 seconds, what is the velocity of the ball coming back to the pitcher
A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 60 cm and is wound around the top at a spot where its radius is 2.0 cm. The thickness of the string is neglig..
A 0.34 kg meterstick balances at its center. If a necklace is suspended from one end of the stick, the balance point moves 9.5 cm toward that end. find the mass of the necklace
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