PLEASE HELP IM TIMED!! THIS IS SCIENCE!! WILL MARK BRAINLIEST 13 POINTS

Which statement best explains how galaxies are held together?

A. Thermal energy generated by stars holds galaxies together
B. Magnetic forces among the components of galaxies holds galaxies together
C. Electrical energy generated by planets holds galaxies together
D. Gravitational forces among stars and other components of galaxies holds galaxies together

Answers

Answer 1

Answer:

D

Explanation:

Gravity pulls objects together

Answer 2
Answer: D

Explanation: Gravity holds things in place. Therefore the answer is gravity. Also, without gravity there would be nothing to hold planets in place which would make it to where there are no galaxies.
Hope this helps!:)

Related Questions

What purpose would the sand serve?



FIRST ONE TO ANSWER CORRECTLY GETS BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass.

Explanation:

Interesting fact...

Why are there differences between the cooling rates of sand and water? Sand cools off faster than water because sand is a solid. Water heats up slower and cools off slower than sand. Sand heats up faster and cools off faster than water.

As a variable and to count as land. As if you were at a beach, this sand would count as the sand that the sun would be beaming on. ^^

-Answer

Which cube has the highest density?

Answers

Answer:

I am a beginner so I dont know! I think that it is 3

Answer: 4



To find density divide mass x volume.


150/10= 15

What question can you ask yourself if you are trying to determine if a mixture is heterogeneous or homogeneous? (This is not in the reading, so you will have to come up with your own question to tell the difference.)

Answers

Answer:

did it have more than one phase

Explanation:

this will be my question

homogeneous has the same uniform appearance (salt water). heterogeneous consists of different substances (a salad or cereal)

When a physical or chemical change occurs, the law of conservation of mass always applies. What happens to the atoms during a chemical change, according to this law?
Group of answer choices

Atoms disappear

Atoms are created.

Atoms are destroyed.

Atoms are rearranged.

Answers

The answer would be the atoms are rearranged

Amy weighs 35 kg and her dad weighs 85 kg. They are roller skating. Amy challenges her dad to race. They stand poised at the starting line. Her dad yells, “Go!” Who will go faster and why?

Answers

Answer:

Amy because she was less than her dad and due to the dads weight being more it'll add friction to the skates which will slow him down.

Explanation:

Answer:

Amy will win because she ways less than her dad.

Explanation:

1

Record temperature of water.
Put ice in water.
Record temperature after ice melts.
2
Put ice in water.
Touch water to determine if it feels colder after ice melts.
3
Measure the mass of the water.
Put ice in water.
Measure the mass of water as ice cubes melt.
4
Determine temperature and mass of water.
Put ice in water.
Record the time for ice to melt.
A student lists some possible ways to investigate the transfer of kinetic energy using ice in a sample of water. Which procedure would be best to investigate the transfer of kinetic energy?

(1 point)

3

1

2

4

Answers

the answer is 4.



explanation:

A student lists some possible ways to investigate the transfer of kinetic energy using ice in a sample of water. The procedure would be best to investigate the transfer of kinetic energy is Determine temperature and mass of water. Put ice in water. Record the time for ice to melt. Therefore, option 4 is correct.

What do you mean by kinetic energy ?

The term kinetic energy is define as the energy of motion, observable as the movement of an object. The formula of kinetic energy is as follows:

Kinetic energy = 1/2 mv²

Kinetic energy exists in every moving object and particle. Kinetic energy is demonstrated by a person walking, a soaring baseball, a crumb falling from a table, and a charged particle in an electric field.

Kinetic energy is the energy held by a moving object. Kinetic energy exists in the earth's rotation around the sun, you walking down the street, and molecules moving in space.

Thus, option 4 is correct.

To learn more about the kinetic energy, follow the link;

https://brainly.com/question/15764612

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What is true about the force acting on the cars at the end of a roller coaster ride as they slow down right before stopping?

Answers

That the gravity dosent Change

The cars will slow down as a result of unbalanced forces and negative acceleration.

What is Inertia?

Inertia is the ability of an object to continue its current motion until and unless some external force causes its speed or direction to change. Inertia is described in the Newton's first law of Motion.

The cars are slowed due to negative acceleration of the object eventually to a stop, because of these unbalanced forces due to friction which are acting on them. The riders, which have inertia, are also acted on by the unbalanced forces throughout the ride causing them to change their state of motion.

Learn more about Inertia here:

https://brainly.com/question/3268780

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Can someone tell me the answer to this?

Answers

Answer:

A

Explanation:

Answer:

A

Explanation:

can u plzz help meee

Answers

The answer is
h: sB and Sb
hd : sb
hr : SB
The answer is h:sb and sb
Hd:sb
Hr:sb

A force of 1000 pounds drags a truck 50 feet in 10 seconds.

How much work is accomplished?

How much power was required?

Work = 50, 000 ft-lbs, Power = 5000 ft-lbs/sec
Work = 50,000 ft-lbs, Power = 500 ft-lbs/sec
Work = 5,000 ft-lbs, Power = 500 ft-lbs/sec

Answers

Answer:

The first one (Work = 160,000 Nm, Power = 160, 000 Nm/sec)

Explanation:

hope this helps :)

A force of 1000 pounds drags a truck 50 feet in 10 seconds. then the work accomplished is 50000 lbs feet and the power required was 5000ft-lbs/sec.

What is Force ?

Force is responsible for the motion of an object. it produces acceleration in the body. According to newton's second law force is mass times acceleration i.e. F =ma. Its SI unit is N which is equivalent to kg.m/s². There are two types of forces, balanced force and unbalanced force. Balanced forces are those forces which are opposite in direction and equal in magnitude. When Net force acting on a body is zero then we call it as balanced force. Balanced force is not responsible for the motion of the body. ex. when two persons pulling rope on both end with equal magnitude which cause them to be balanced force have 0 net force. Unbalanced forces are those when resultant of all the forces is not equal to zero is called as unbalanced force. unbalanced force is responsible for the motion of the body.

Given,

F = 1000 pound

s = 50 feet

t = 10 s

Work = F.s = 1000 * 50 = 50000 lbs feet

Power = Work/time = 50000/10 = 5000ft-lbs/sec

Hence option A is correct.

To know more about Force :

https://brainly.com/question/30507236

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12 POINTS PLUS MARKF BRAINILEST

Answers

Answer:

gas

Explanation:

Gas because gases more freely and faster than solids and liquids do
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