Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
a family wishes to purchase a heat pump for their home. The get-it-cheap co. sells a heat pump that has an operating performance 38% of the coefficient of performance of an ideal Carnot heat pump. The price is $3200. For $5200, the Top-of-the-line Co. sells a heat pump that has an operating performance 52% of that of an ideal Carnot heat pump. The family wishes to maintain their home at 21C with an average winter outside temperature of -5C. The family estimates that it will take an average of 21 GJ of energy per month to keep the house heated to this temperature for 5 cold months. The cost of electrical energy is $0.0185/kWh.
1. Compute the overall coefficient of performance for each heat pump.
2. Compute the cost of running each heat pump for 5 cold months.
3. How long will it take for the top-of-the-line heat pump to make up the cost differential?
A small ball rolls horizontally off the edge of a tabletop that is 1.24 m high. What is its speed at the instant it leaves the table
What is the speed of the two carts at the moment while their speeds are equal?
What intensity level of the horn's sound is observed by somebody waiting at an intersection 58m from the train.
An ocean liner leaves New York City and travels 43° north of east for 189 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
an induction roller coaster can accelerate a train from zero to 27m/s in 2.5 seconds. What is the average force exerted on a 68kg rider
A blacksmith cools a 1.30kg chunk of iron, initially at a temperature 650.0 degrees C, How much water did the blacksmith trickle over the iron
The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. Explain how far up the ladder can an 760 N person climb before the ladder begins to slip?
The potential difference between the ends of a resistor is 9 V and the rate of energy dissipation in it is 18 W. What is the value of that resistor
A silver wire has a cross sectional area A = 2.0 mm2. A total of 9.4 × 1018 electrons pass through the wire in 3.0 s. What is the drift velocity of these electrons
question1visualize a crystal that exploits for binding coulomb attraction of the positive andnbspnegative ions of the
The plates of a 631-pF parallel plate capacitor are separated by 1.21 mm, what is the magnitude of the electric field in the capacitor
You decide to determine the depth of a tank of water using the sun's light. With the sun overhead, the tank's bottom is lit, Approximately how deep is the tanks
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd