If an 80 kg swimmer pushes off a pool wall with a force of 250 N, what is her
acceleration?

Answers

Answer 1

Answer:

Explanation:

Force = Mass*Acceleration

Remember this formula because its one of the most used formula in all of physics.

250N = 80kg*Acceleration

a = 3.125 m/s^2

There would definitely be friction because of the water, but since this says high school physics, you prolly can assume it to be negligible


Related Questions

When two forces exerted on an object are balanced, the object

Answers

Answer: Will not accelerate.

Explanation: When all the forces acting upon an object balance each other, the object will be at equilibrium; it will not accelerate.

Which of the following is an example of chemical change?
A. Filling up a balloon with hot air.
B. Taking a glass of water and freezing it by placing it in the freezer.
C. A plant collecting sunlight and turning it into food.
D. Your dog ripping up your homework.

Answers

Answer:

c

Explanation:

all the others r physical

C.
New chemicals are being formed, which indicates a chemical change.

Explain two negative effects of friction

Answers

disadvantages

Explanation:

releases heat when not required

opposes motion

Advantages- you have friction
Disadvantages- at one point it will end and you will not longe have friction

Example of kinetic to potential ? And how the energy is changing forms???? Please help

Answers

Answer:

A ball when from moving to stoping

Explanation:

Kinetic = energy of motion

Potential = energy stored

When you roll a ball on the ground, it gains kinetic energy, but then the ball starts to slow down until it stops and it remains at rest which means it's at potential energy. It went from moving (kinetic) to stoping (potential)

Hope this helped!

Have a supercalifragilisticexpialidocious day!

Which of the following best demonstrates Newton's Third Law?
Question 3 options:

The harder you kick a soccer ball, the faster it accelerates

An object sitting on the ground will stay there until somebody or something pushes it

Wearing a seatbelt prevents you from continuing to move when the car has stopped

When you walk your foot pushes down on the ground while the ground pushes back on your foot

Answers

Answer:

when you walk your foot pushes down on the ground, while the ground pushes back on your foot

Explanation:

it was another brainly question, Goodluck :)

It’s the third option

Because of the costs involved in maintaining high temperatures and pressure, nuclear method for generating electrical energy. is not yet a practical Which best completes the statement?

Answers

I think it Fusion or energy because I had that question in my school so I wrote it in my notes book so it fusion or energy I don’t now hop this help you

Answer:

Fusion or energy because I had that question in my school so I wrote it in my notes book so it fusion or energy I don’t now hop this help you

Explanation:

HELP I WILL GIVE BRAINLYEST!!

The diagram below shows three parts labeled A, B, and C, of Earth's orbit around the Sun.

Which of these best arranges the parts of the orbit from fastest to slowest speed of Earth in them? (3 points)

Group of answer choices

C → B → A

A → B → C

B → C → A

A → C → B



Question 2
is art good?

Answers

Answer:

A-B-C

Explanation:

Depends if you have good taste.

As altitude increases in the troposphere and stratosphere, the air temperature does what?
A. decreases in the troposphere and increases in the stratosphere.
B. Decreases in both places.
C. Increases in the troposphere and decreases in the stratosphere.
D. Increases in both places

Answers

Answer:

1

Explanation:

The correct answer is decreases in the troposphere and increases in the stratosphere.

How does altitude affect the troposphere?

For this reason, the density of gases decreases as the distance from Earth's surface increases. Put another way, air pressure (i.e., density) decreases as altitude increases.

How can altitude affect the temperature of a place?

The temperature of a place decreases with increasing altitude from the earth's surface.

Learn more about troposphere and stratosphere here: brainly.com/question/42841653

#SPJ2

What happens to water molecules when a large quantity of thermal energy is added to water in the liquid state?

Answers

The molecules gain kinetic energy, more farther apart, and become a gas.
Quizlet can help you also

Define potential energy (PE)

Answers

Stored energy that depends on a position of different parts or movements
potential energy is stored energy that depends upon the relative position of various parts of a system

Pls help this is due today.
Beyonce weighs 500 N and is sitting at one end of a see-saw which is 4 m long and balanced in the middle. Jordan is 2000 N. Where should she sit in order to balance the see-saw?

Answers

Answer:

11 moments docx has the answer

Explanation:

A person’s blood type depends on the type of protein marker, called an , found on the cell membranes of the red blood cells.

Answers

Called an Antigen found on

A person’s blood type depends on the type of protein marker, called an  Antigen, found on the cell membranes of the red blood cell.

What is antigen?

A molecule known as an antigen is one that triggers the formation of an antibody and the immune system's response.

Large protein molecules known as antigens are found on the surface of pathogens like bacteria, fungi, viruses, and other foreign substances. When these dangerous substances enter the body, the body's immune system reacts by producing antibodies.

The ABO system distinguishes 4 major blood types:

Blood group O - has no antigens, but both anti-A and anti-B antibodies in the plasma. Blood group AB - has both A and B antigens, but no antibodies.Blood group A - has A antigens on the red blood cells with anti-B antibodies in the plasma. Blood group B - has B antigens with anti-A antibodies in the plasma.

Learn more about antigen here:

https://brainly.com/question/19793069

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Which of the following correctly represents an element?
A Water - H20
B Copper - Cu
C Carbon monoxide - CO
D Salt - NaCl

Answers

A water - H20 because you can touch it

Answer:

A water H2O

Explanation:

H2O is composed of 2 hydrogens which is represented H2 and the hydrogen is combined with one oxygen which forms water which is H2O

What forces act to pull the poles of a magnet together, or to push them apart?​

Answers

Answer:

Gravity,

I hope this correct

Hi, I have a question if I calculate the average force that must be exerted on a 0.145 kg baseball for me to give it an acceleration of 130 m/s2. How would I get I get the acceleration would I divide 130 by 0.145 kg to get the acceleration?

Answers

Newton’s Second Law: Force = mass times acceleration.

F = 0.145 * 130

You would multiply to find the force required, not divide. Hope this helps!

Calculate the change in gravitational potential energy
when a 1.5Kg box falls from a 2m shelf. Take
g=10N/Kg.

Answers

Answer:

30J

Explanation:

Given parameters:

Mass of box  = 1.5kg

Height  = 2m

Acceleration due to gravity  = 10N/kg

Unknown:

Change in gravitational potential energy  = ?

Solution:

 The change in gravitational potential energy is given as:

      ΔGPE  = mgh  

m is the mass

g is the acceleration due to gravity

h is the height

   ΔGPE  = 1.5 x 10 x 2  = 30J

Think about the types of forces holding the atoms together in different chemicals. Are there any patterns that can be drawn from the data? Explain.

Answers

Hello. You did not enter the data to which this question refers, which makes it impossible for it to have an exact answer. However, I will try to help you in the best possible way.

The forces that hold the elements together are called intermolecular forces. They are formed by covalent bonds between the molecules and can be called: dipole-induced (occurs between nonpolar molecules that have a negative pole and a positive pole) and dipole-dipole (occurs between polar moileculas, except when hydrogen is present).

can you please explain hooks law?

Answers

Explanation:

Hooke's law is a law of physics that states that the force needed to extend or compress a spring by some distance scales linearly with respect to that distance—that is, Fₛ = kx, where k is a constant factor characteristic of the spring, and x is small compared to the total possible deformation of the spring.

An employee was watching Jessica, an IT employee, typing in many different confusing terms. Jessica explained that she needed to fix the code and test a couple of programs before she could train the employee on how to use the software. Which IT career would be responsible for these tasks?

Network Systems
Programming and Software Development
Information Support and Services
Interactive Media

Answers

Answer:

B.) Programming and Software

Explanation:

Answer on Edge

Answer:

its B

Explanation:

Why is self-esteem a false strategy for a theory of motivation ?

Answers

False self-esteem comes from people who build up their little egos based on their surface self. They only see themselves as their physical appearance, their personal story, bank account and even their past conquests. ... Inflated self-worth gives them a false impression of both their worth and abilities.

Mr. White drops a bowling ball and a feather from the top of the Washington Monument.

a) Which will hit the ground first?  Why?

b) If Mr. White were to repeat this experiment inside a vacuum chamber, which would hit the ground first?  Why?

If you can provide some explanation I would greatly appreciate it! :)

Answers

Answer:

A) The bowling ball will hit the ground first. It is heavier, which has greater density, allowing it to reach the ground first.

B) Feather. If you want to be able to blow a bowling ball in a vaccum cleaner, it's almost impossible since it's very heavy. If it's a feather, it would be easier as it's light and the air inside it is able to force it down.

Note: I haven't learnt physics at all yet, this is just an attempt. I'm in 7th grade currently and I will probably be taking physics sometime in 9th grade.

Cyclist 1 pedals 40 kilometers east in 2 hours. Cyclist 2 pedals 10 kilometers west in half an hour. Based on this information, which statement about cyclists is correct?

Answers

Answer:

See Explanation

Explanation:

Given

Cyclist 1:

[tex]Distance = 40km[/tex]

[tex]Time = 2hr[/tex]

[tex]Direction = East[/tex]

Cyclist 2:

[tex]Distance = 10km[/tex]

[tex]Time = 0.5hr[/tex]

[tex]Direction = West[/tex]

The question requires options. Since none is given,  I'll answer on a general term.

First, calculate the speed of both cyclists

[tex]Speed = \frac{Distance}{Time}[/tex]

Cyclist 1:

[tex]Distance = 40km[/tex]

[tex]Time = 2hr[/tex]

[tex]Speed = \frac{40km}{2hr}[/tex]

[tex]Speed = 20km/hr[/tex]

Cyclist 2:

[tex]Distance = 10km[/tex]

[tex]Time = 0.5hr[/tex]

[tex]Speed = \frac{10km}{0.5hr}[/tex]

[tex]Speed = 20km/hr[/tex]

The following can be deduced from above:

Both cyclists travel at the same speed of 20km/hrBoth cyclists travel in opposite directions

fill in the blanks (about force)
depends on _____ and _____

Answers

Depends on who and where I’m just answering

. Work done by a force depends upon force applied and displacement produced.

Can any one here form light from lemon?​

Answers

Answer:

I did not get it

Explanation:

what u r saying

Yes if u wire it u can get energy

the process through which electrons are attracted to or repelled by an external electric field, causing the electrons to move within their own atoms

Answers

Answer:

Polarisation

Explanation:

When the electric field of an atom distorts then the cloud of negative charges move away from the clouds of positive charges. This movement of clouds in opposite direction causes separation of charges and and causes one side positive and one side negative. This process is known as polarisation

How is velocity different from speed? Based on distance and/or direction

Answers

Answer:

Speed is solved with time and distance but has no direction

Average velocity is solved with Δx/Δt and has a direction

Heat is an exchange of internal energy from one system to another due to
OA.
one system being liquid and the other being solid.
OB.
the systems having the same temperature.
OC.
one system being gas and the other being solid.
OD
a temperature difference between the systems.

Answers

Answer:

OD

Explanation:

2 bodies should have different temperatures for energy to be transferred

hii please help i’ll give brainliest if you give a correct answer please

Answers

B they are equal and and act in opposite directions

describe nucleus (animal) in your own words(20 points)​

Answers

Answer:

The nucleus is a highly specialized organelle that serves as the information and administrative center of the cell. ... Most of the nuclear material consists of chromatin, the unstructured form of the cell's dna that will organize to form chromosomes during mitosis or cell division.

Explanation:

Help! I don’t really know what it’s asking

Answers

You have to do the math of each and see which one adds up to 66.5
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