# Physics

An Electricity account shows that a household has used 1400 units of electrical energy during a three month period. Calculate :
a)the number of joules of energy used in this time.
b)the average number of joulesof energy used perday .
c)the average power consumption in watts.
d)the cost of electricity in this three month period if each unit costs \$2.50.

1. 👍 0
2. 👎 0
3. 👁 169
1. Check your 6-1-11, 6:28pm post for solution.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Physics multiple choice questions

1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical

asked by Jessica on April 8, 2014
2. ### Maths

The charge for electricity consumption (E) is partly constant and partly varies as the number of (N) units used. The charge for 163 units is #453.8 while the charge for 42 units is #139.20. Calculate the charge per unit of

asked by Haleema on July 20, 2020
3. ### Physic

A dam is used to block the passage of a river and to generate electricity. Approximately 58.4 x 103 kg of water falls each second through a height of 20.1 m. If one half of the gravitational potential energy of the water were

asked by Monet Nguyen on October 13, 2012
4. ### Physics

In a hydroelectric dam, water falls 26.0 m and then spins a turbine to generate electricity. What is ∆U of 1.0 kg of water? Suppose the dam is 80% efficient at converting the water's potential energy to electrical energy. How

asked by Zach on November 30, 2009
1. ### Physics

With a 1220–W toaster, how much electrical energy is needed to make a slice of toast (cooking time = 1.3 minute)? At 12.1 cents/kW·h, how much does this cost? (You do not need to enter any units.)

asked by Joe on September 13, 2014
2. ### Physics multiple choice questions

1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical

asked by Jessica on April 7, 2014
3. ### Social Impact of Technology

Which of these kinds of energy is a fundamental requisite for life on Earth? A. Electrical energy B. Solar energy C. Chemical energy D. Potential energy An -- C

asked by Angela on November 28, 2016

1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical

asked by Jessica on April 7, 2014
1. ### science

Which option correctly defines a generator? A.a device that converts mechanical energy into electrical energy B.a device that converts electrical energy into mechanical energy C.a device that converts light energy into electrical

asked by Help on May 4, 2020
2. ### physics

A)When the energy input to gas fired power station is 1000MJ,the electrical energy output is 300MJ.What is the efficiency of the power station in changing the energy in gas into electrical energy b)what form does the 700MJ of lost

asked by Luc on August 3, 2011
3. ### Physics

Which of the following household electrical appliances has the greatest rate of energy consumption? ITEM VOLTAGE CURRENT A. Video Camera 6.0 V 1.6 A B. Radio 4.5 V 0. 45 A C. Cassette Recorder 6.0 V 2.2 A D. Ghetto Blaster 12 V 1.

asked by sarah on April 6, 2015