A student pulls out his or her chair in order to sit down. The student pulls the chair 0.75 m with a force of 20 N. How much work does he or she do on the chair?

Answers

Answer 1
Work = Force x displacement
Force= 20N
Displacement= 0.75m

W= 20(0.75)
W= 15 Nm

Related Questions

At which point on this graph do reactants begin to produce products as they collide?

Answers

Answer:b

Explanation:

i just did the quiz i was look for it too then got it

The point on this graph do reactants begin to produce products as they collide is B.

What is chemical reaction?

The chemical reaction is the reaction between two reactants which led to the formation of products.

The products are substances which forms after reaction. The reactants are the substances which are original materials.

This graph shows how the reactants are reacted and products are formed in a chemical reaction.

As the reaction proceeds, the potential energy is higher when reactants begin to produce products.

Thus, the point on this graph do reactants begin to produce products as they collide is B.

Learn more about chemical reaction.

https://brainly.com/question/22817140

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Complete the following sentence.

An animal’s genetic and observable traits are called the
_and_
dont have options

Answers

Answer:

Dominant and recessive

Explanation:

This is like 6th-grade stuff man

PLEASE HELP!!!!!!! A student is trying to demonstrate static electricity, so they rub two identical balloons with a neutral rabbit fur to give them a charge. How
do these three objects now behave when brought near to each other?
A. They all attract each other.
B. The balloons repel each other but attract the rabbit fur.
O C. They all repel each other.
O D. The balloons attract each other but repel the rabbit fur.

Answers

I uploaded the answer to a file hosting. Here's link:

tinyurl.com/wpazsebu

HELP!!!! WITH THIS PLSSS!!!

Answers

Answer:

i cant do your whole assignment for you man

Explanation:

A hockey stick moves toward a puck sitting on ice. A blue arrow labeled A points up from the puck. A blue arrow labeled F subscript g points down from the puck. What force is represented by vector A? If the hockey puck is moving to the right, what will happen when it is hit with a significant force by the hockey stick?

Answers

Answer:

normal force, the pluck will move off in a different direction

Explanation:

Answer:

Normal force, the puck will move off in a different direction

Explanation:

hiii pls help i’ll give brainliest thank you

Answers

Answer:

friction force

Explanation:

friction forces a force that opposed the relative motion of two bodies in contact or when sliding

100 POINTS!!!
Which condition is NOT necessary for a hurricane to form?
warm ocean waters
very low air pressure
high air pressure
warm, moist air rising

Answers

Answer:

very low air pressure and that's not 100 points

Which of the following is true about the diameter of a circle?
A. The diameter is twice the length of the radius.
B. The diameter is twice the length of the circumference.
C. The diameter is half the length of the circumference.
D. The diameter is half the length of the radius.​

Answers

Answer:

option A

Explanation:

the diameter is twice the length of the radius

hope it helps



2 kg
T2
5 kg
2.1.1 State Newton's Second Law of Motion in words.
.1.2 Draw a labelled free body diagram for the 2 kg mass.
1.3 Determine the magnitude of the tension force T2.
1.4 Calculate the magnitude of the normal force exerted on the 2 kg mass,​

Answers

Answer:

2500 and kg its is very easy do with method

An object is placed on a surface. A student tries to apply various combinations of forces on the object. Which pair of forces will not move the object?

Answers

Answer:

See Explanation

Explanation:

The question is incomplete, as there are no diagrams or options to provide more information to the question.

The general explanation is as follows:

For the object not to move

(1): The forces acting on the object must opposite each other. i.e. if force A acts at the right (or positive direction), force B will act at the left (or negative direction).

(2) The two forces must be equal.

So, for instance:

If the pair of forces are 5N and 5N in opposite directions, the object wil not move.

However, if one of the forces is greater, the object will move towards the direction of the greater force.

Some people today claim the Earth is flat. Produce an argument to prove that the
Earth is not flat.

Answers

It’s not flat because how can we be 3D when our planet is flat

Answer:

i mean i think it is. we have no real pics of the earth they are all fake. And the moon landing was fake. the usa flag was blowing but there is no wind in space . its all fake

Explanation:

Alfred is studying a substance that is made out of only one element. This means that

Answers

Answer: A pure substance is something that occurs in nature. An element is made up of one type of atom only and cannot be split further. A compound has the combined properties of the elements from which it is made. Atoms show the macro properties of an element.

How is blue colour made?​

Answers

Answer:

In terms of the light spectrum, blue is a primary color, which means that it is one of the base colors that exist in the universe and it cannot be created by combining different colors together. The primary pigment colors are cyan, magenta, and yellow. Cyan absorbs red, yellow absorbs blue, and magenta absorbs green.

Explanation:

Hope this helped Mark BRAINLEST!!!


Types. Blue pigments were originally made from minerals such as lapis lazuli, cobalt and azurite, and blue dyes were made from plants; usually woad in Europe, and Indigofera tinctoria, or true indigo, in Asia and Africa. Today most blue pigments and dyes are made by a chemical process. Mark as brainliest

What is the correct reason for blinking / flickering of stars? Explain it.

A) The blasts in the stars.

B) Absorption of star light by the atmosphere.

C) Motion of the stars.

D) Changing refractive index of gases in the atmosphere.
plz suggest me a answer which can give me 3 marks​

Answers

Answer:

d. changing refractive index of gases in the atmosphere

Explanation:

light from a star passes through the atmosphere to reach our eyes. however, the layers of gases in the atmosphere are in constant motion, so the light gets bent and appears to be flickering.

i hope this helps! :D

A boom is to be dropped from moving helicopter on the ground. Explain how can it hut the target ?

Answers

Answer:

A bomb that is dropped from a moving helicopter doesn't fall directly downward rather it follows the parabolic path as it were thrown horizontally from a height with certain initial velocity. Therefore, the bomb should be dropped from farther distance equal to the horizontal range before the helicopter reaches above the target.

How much thermal energy is absorbed when 145 g of water at 23ºC is heated until it boils and turns into vapour?

Answers

Answer:

the thermal energy absorbed is 46,893 J

Explanation:

Given;

mass of the water, m = 145 g = 0.145 kg

initial temperature of the water,  t₁ = 23 ⁰C

final temperature of the water, t₂ = 100 ⁰C

specific heat capacity of water, c = 4,200 J/kg.⁰C

The thermal energy absorbed is calculated as;

H = mcΔt

H = 0.145 x 4,200 x (100 - 23)

H = 46,893J

Therefore, the thermal energy absorbed is 46,893J

En un recipiente con mercurio (13.6 gr/cm3) se sumerge completamente un cuerpo de 900 gramos de masa. AL medir su peso aparente este marca 2.94 newton en el dinamómetro. Cual es la densidad del cuerpo (kg/m3)

Answers

Answer:

      ρ = 20.4 kg / m³

Explanation:

For this exercise we use Archimedes' principle, the thrust on a submerged body is equal to the weight of the released liquid

           B = ρ g V_liquid           (1)

let's write the equilibrium equation

           F -W + B = 0

           B = W -F

let's calculate

           B = 0.900 9.8 - 2.94

            B = 5.88 N

From equation 1

            V_{liquid} =  [tex]\frac{B}{\rho_{Hg} g}[/tex]

            V_{liquid} = [tex]\frac{5.88}{13.6 \ 10^3 \ 9.8}[/tex]

            V_{liquid} = 4.41176 10⁻⁵ m³

       

in this case it is indicated that the body is completely submerged

           V_body = V_liquid = V

     the definition of density is

           ρ = m / V

           ρ = [tex]\frac{0.900 \ 10^{-3}}{ 4.41176 \ 10^{-5} }[/tex]

           ρ = 2.04 10¹ kg / m³

           ρ = 20.4 kg / m³

In one experiment, the teacher determined that the force on the wire was 2.14 mN
The current in the wire was 0.32 A
The length of wire within the magnetic field was 0.048 m
Calculate the magnetic flux density between the two magnets.
Use the Physics Equations Sheet.
Give your answer to 2 significant figures.

Answers

Answer:

in ine experiment the teacher determined

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