145 Best Energy Questions and Answers (Q&A) - ProProfs Discuss

Which energy transformation occurs in a toaster?

Mike John, Content Explorer
Answered: Jul 08, 2019

The correct answer to this question is C, Electric to thermal. Electric toasters are used in many homes to make toast, waffles, and frozen pastries. A toaster transfers electric energy taken from...Read More

3 Answers

2694 views

Which of the following has the most potential energy?

Markda John
Answered: Jan 01, 2018

The item with the most potential energy is the car at the top of the hill, or “A”. Potential energy is the energy that is stored in the item. The item has the potential to do...Read More

4 Answers

2373 views

What device converts chemical energy to mechanical energy?

D. gray, Builder
Answered: Apr 19, 2019

All of the given examples can be converted from chemical energy to mechanical energy. Human beings usually need sugar and other types of food in order to become energized. Once they become...Read More

2 Answers

2252 views

Why is the reaction H2 + Cl2 → 2HCl exothermic?

T. Moore, Writer
Answered: Mar 07, 2019

In exothermic reactions, more energy is involved when bonds are formed in the products than used to break the bonds reactant. If the total energy required to break bonds in the reactants is...Read More

2 Answers

1858 views

Which requires more work?

John Smith
Answered: Apr 16, 2024

Both require the same amount of work-work involves a force acting upon an object to cause a displacement. the amount of work done is found by multiplying f*d*cos(theta). the equation can be used for...Read More

2 Answers

1359 views

How many homes can a 1 megawatt (MW) wind turbine power?

Emerlyes
Answered: Apr 16, 2024

225-300

An average U.S. household uses about 10,655 kilowatt-hours (kWh) of electricity each year. One megawatt of wind energy can generate from 2.4 to more than 3 million kWh annually....Read More

1 Answer

1279 views

Which of the following is the least amount of energy?

Robert Hazlewood, Senior Executive
Answered: May 30, 2019

There are a lot of people who feel that their lack of energy is the reason why they are unable to do the tasks that they have to do. The various units that are used to describe energy will also...Read More

2 Answers

1222 views

What is the probable density of the granitic bedrock?

W. Kaye, Ex-Marine
Answered: Mar 27, 2019

B is the answer to this question. The answer is based on the shown diagram. There are some people who may get confused with what a bedrock actually is. This is the type of solid rock that is...Read More

2 Answers

1054 views

What has happened to the light passing through the water to cause the given-below difference?

M. Krasinski, Content Writer
Answered: Feb 11, 2019

Reflection is a part of science which can best be described as waves in which they have changed directions. The most common place to find this reflection is in mirrors or in a lake. In light,...Read More

2 Answers

1015 views

What is the average power supplied by a 60.0 kg person running up a flight of stairs a vertical distance of 4.0 m in 4.2 s?

D. gray, Builder
Answered: Apr 19, 2019

There are always some different types of power and energy that are being produced by people depending on the movement that they do. Take note that there are various factors that can also affect...Read More

3 Answers

958 views

What has the least kinetic energy?

Wyatt Williams
Answered: Apr 16, 2024

An object that is not moving

1 Answer

894 views

What will be the speed of the mass after sliding 4.0 m along the plane?

W. Pratt, Marketing Analyst
Answered: Apr 10, 2019

The correct answer to this question is 3/5 m/s.This question is one which would be used in physics and relates to kinetic energy. Mass has an affect on accelaration, which affects speed...Read More

2 Answers

782 views

Where does the energy go?

Malcolm Carneal, Digital Nomad
Answered: Aug 25, 2020

It is true that energy will always be there. There are times when kinetic will turn into potential energy but it would just need another item that can turn it into kinetic energy. The given...Read More

3 Answers

775 views

How much kinetic energy does the ball gain from the player?

R. Jones, Student
Answered: May 17, 2019

The correct answer to this question is A, 0.5J. Kinetic energy is the energy of a body or object that it holds due to motion. This energy is used in physics and is gained during acceleration. The...Read More

2 Answers

775 views

Is moon the source of useable energy?

Jisalman
Answered: Apr 16, 2024

The moon

1 Answer

741 views

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