What is difference between kilowatt and kilowatt hour?

Answers

Answer 1

Answer: Those two units can be compared to a 'mile per hour' and a 'mile per hour - hour'.
One is a rate. The other is a quantity, after maintaining a rate for some time.

-- 'Joule' is a unit of energy. It's the amount of work (energy) you do
when you push with a force of 1 newton though a distance of 1 meter.
Lifting 10 pound of beans 3 feet off the floor takes about 40.7 joules of energy.

-- 'Watt' is a rate of using energy . . . 1 joule per second.
If you lift 10 pounds 3 feet off the floor in 1 second, your power is 40.7 watts.

-- 'Watt-second' is the amount of energy used in one second,
at the rate of 1 joule per second . . . 1 joule.

-- 'Watt-hour' is the amount of energy used in one hour,
at the rate of 1 joule per second . . . 3,600 joules.

-- 'Kilowatt' is a bigger rate of using energy . . . 1,000 joules per second.

-- 'Kilowatt - second' is the amount of energy used in one second,
at the rate of 1,000 joules per second . . . 1,000 joules .

-- 'Kilowatt - hour' is the amount of energy used in one hour,
at the rate of 1,000 joules per second . . . 3,600,000 joules .

Depending on where you live, 3,600,000 joules of energy bought
from the electric company costs something between 5¢ and 25¢.

Answer 2

Answer: Kilowatt hour is a measure of ENERGY
Kilowatt is a measure of POWER

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What force is required to accelerate a body with a mass of 15 kilograms at a rate of 8 m/s2?A. 23 kg
B. 120 N
C. 23 N
D. 1.875 kg

Answers

What force is required to accelerate a body with a mass of 15 kilograms at a rate of 8m/s²

As Force=Mass X Acceleration

Here F= 15 Kg and Accelerate = 8m/sq sec

So force required = 15×8 = 120N

F = m * a

F = 15 kg * 8 m/s²

F = 120 N

Answer B

hope this helps

An apple falls to the ground due to: (A) frictional force. (B) muscular force. (C) gravitational force. (D) electrostatic force.

Answers

The answer is (c) an apple falls to the ground due to gravitational force

Describe the relationship between a moving objects mass and its kinetic energy

Answers

KE = 1/2 mv^2 is the relationship betwee mass and kinetic energy

What does action force mean

Answers

Action force is force acting in one direction. Reaction force is force acting in the opposite direction. Learn more about Newton's Third Law as it explains action and reaction forces through several examples, and test your knowledge with quiz questions.

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Action force is force acting in one direction. Reaction force is force acting in the opposite direction.

What is Newtons second law of motion?

Answers

The acceleration of an objection is directly proportional to the magnitude of the net force, in the same direction of the net force, and inversely proportional to the mass.

Hello there!

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓↓↓

Newton's second law of motion states that the total net force acting on an object is equal to mass times acceleration.

Newton's second law of motion formula:

↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓

F=force=newtons= $kg*(m)/(s^2)$

M=mass (kg)

A-acceleration $((m)/(s^2))$

F=ma

M=f/a

A=f/m

For example:

↓↓↓↓↓↓↓↓↓↓↓

Calculate the force needed to accelerate an object to 4.3 m/s². The object has a mass of 2.2 kg. Round the answer to the nearest tenth.

↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓

A= 4.3 m/s²

M= 2.2 kg

F=??

F=ma

2.2 kg (4.3 m/s²)=9.46=9.5N

Answer⇒⇒⇒⇒⇒9.5N

Hope this helps!

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Which type of waves from the electromagnetic spectrum are used in heat lamps and heat sensing devices? visible light
ultraviolet rays
radio waves
infrared waves

Answers

Infrared waves are used in heat lamps and other heat sensing devices. Infrared waves or commonly known as Infrared radiations (IR) is the type of electromagnetic radiation we encounter most in our everyday life. Heat lamps are electrical devices which emit infrared radiation.

Final answer:

Infrared waves from the electromagnetic spectrum are used in heat lamps and heat sensing devices, as they can penetrate and heat objects more deeply and are also emitted by objects based on their temperature.

Explanation:

The type of waves from the electromagnetic spectrum that are used in heat lamps and heat sensing devices are infrared waves.

These waves are invisible to the human eye but are detectable as heat. Infrared waves have longer wavelengths than visible light, which enables them to penetrate and heat objects more deeply.

For instance, a heat lamp emits infrared radiation that can warm up the objects it shines upon, while heat sensing devices, like thermal cameras, detect the infrared radiation emitted by objects based on their temperature.