What is the efficiency

Assignment Help Physics
Reference no: EM13535707

100 kg of water is raised to a height of 50m.the water is used to produce electricity.the electricity produced can run three 100w lamps for 1 hour. what is the efficiency?

Reference no: EM13535707

Questions Cloud

Determine the quantity of heat added : Determine the quantity of heat added to 3.5 moles of the ideal gas argon if the temperature increases from 75 °C to 225 °C during an isobaric process. Note: The molar specific heats of argon are CV = 3.0 cal/K·mol and CP = 5.0 cal/K·mol.
Calculate the heat absorbed by gas-change in internal energy : One kilogram of dry air is warmed from 273 K to 313 K under a constant pressure of 1000 hPa. Calculate (a) the heat absorbed by the gas, (b) the work done, and (c) the change in internal energy.
What is change of temperature of air-amount of heat absorbed : At T = O degrees Celsius and p = 1000mb, 1g of dry air receives during an isochoric process an amount of heat. It is then observed that its pressure increases by 50mb. What is the change of temperature of the air and what is the amount of heat absorb..
A sample of dry air has a temperature : A sample of dry air has a temperature of 300 K, a volume of 3 liters and a pressure of 4 atmospheres. The air then undergoes the following changes: (a) it is warmed under a constant pressure to 500 K, (b) it is cooled under constant volume to 250 ..
What is the efficiency : 100 kg of water is raised to a height of 50m.the water is used to produce electricity.the electricity produced can run three 100w lamps for 1 hour. what is the efficiency?
What is the work done by the gas on the environment : One mole of a gas expands from a volume of 5 liters and a temperature of 273 K to a volume of 12 liters and a temperature of 300 K. What is the work done by the gas on the environment?
The density of gasoline-temperature compensated : The density of gasoline is 730 kg/m3 at 0°C. Its average coefficient of volume expansion is 9.60 X 10^–4 (°C)^-1. Assume 1.00 gal of gasoline occupies 0.00380 m^3. How many extra kilograms of gasoline would you receive if you bought 10.0 gal of gasol..
What is the new tire pressure : An automobile tire is inflated with air originally at 20.0°C and normal atmospheric pressure. During the process, the air is compressed to 25.0% of its original volume and the temperature is increased to 35.0°C. (a) What is the tire pressure? (b) Aft..
Find the mass of gas-gravitational force of earth exerted on : A container in the shape of a cube 20.0 cm on each edge contains air (with equivalent molar mass 28.9 g/mol) at atmospheric pressure and temperature 330 K. Find (a) the mass of the gas, (b) the gravitational force of the Earth exerted on it, and (c) ..

Reviews

Write a Review

Physics Questions & Answers

  Determine how long will it take to make the trip

The distance from earth to the center of our galaxy is about 30,000 light years (1 ly = 1 light year = 9.47 x 10^15 m), how long will it take to make the trip

  Determine the refractive power of a magnifying glass

A stamp collector is viewing a stamp with a magnifying glass held next to her eye. What is the refractive power of a magnifying glass that has an angular magnification of 5.8 when the image of the stamp is located at the near point

  Calculate the charge on the ion

An ion accelerated through a potential difference of 240.0 V has its potential energy decreased by potential energy of 7.68*10^-17 J

  How much work is done by the tension in the cable

A rescue helicopter lifts a 60 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2, How much work is done by the tension in the cable

  Find how tall is the building

A rock is shot up vertically upward from the edge of the top of the building. The rock reaches its maximum height 2 s after being shot. find how tall is the building

  Determine the current flowing out of the transformer

A Step-Up transformer with 60 Hz AC power has an input voltage of 1000 V at a current of 2 Amperes, What is the current flowing out of the transformer

  Obtain the current induced in the loop

A single loop of wire with an area of 9.05×10?2 m2 is in a uniform magnetic field that has an initial value of 3.69 T , find the current induced in the loop

  What is the energy density

What is the energy density. Find out the lowest frequency that permits standing waves in both strings with a node at the junction. The standing wave pattern in each string may have a different number of loops.

  Find the total charge stored in the system

Suppose you have a 9.00 V battery, a 2.2uF capacitor, and a 9.05uF capacitor. Find the total charge stored in the system if the capacitors are connected to the battery in series in C

  How far up hill will coast before starting to roll back down

A molecule in air is moving at a speed of 459 m/s. How various meters would the molecule move during 7ms if it didn't collide with any other molecules.

  Calculate the rate of heat conduction along the rod

One end of a 30 cm long aluminum rod with diameter 2 cm is kept at 460*C while the other end is held in water at 25*C. Find the rate of heat conduction along the rod

  Estimate the feathers drag coefficient

Suppose you drop a feather and a steel ball of equal masses (0.010 kg) at the same time from a height of 1.9 m and you are told that the feather hits the floor 4.5 s after the steel ball. Estimate the feather's drag coefficient

Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd