If an atom is neutral, then the number of electrons is equal to the number of

Answers

Answer 1

Answer:

Answer:

The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.

hope it helps:)

Answer 2

Answer:

Answer:

Then number of electrons is equal to number of protons

Explanation:

Since protons are positive and electrons are negitive, they cancel each other.

HENCE THEY ARE NEUTRL

Hope it helps u...

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Does a force cause motion or a change in motion

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it changes the motion as Newton's second law of motion states that a force, acting on an object, will change its velocity by changing either its speed or its direction or both. If your basketball goes rolling into the street and is hit by a bike, either the ball will change direction or its speed or both.

1) Why do the different rocks exposed in the Grand Canyon appear in layers for the most part? Where are the oldest layers of rock found? Where are the youngest rocks found?

Answers

This is what i put:

TheGrand Canyon is made up of sedimentary rock; over time, sediments formed intolayers. The layers on the bottom are the oldest, and the layers on the top arethe youngest and newest.

Try and paraphrase though

Answer: C

Scientists observe the layers for evidence of similar rock types and fossil formations to determine the age of landforms. If they find the same fossil in two different locations, scientists may conclude that those fossils are most likely from the same time period. The same is true for landforms made of certain types of rock. When scientists see layers of similar rock sediments, they use that as evidence to support that are from a similar time period. By analyzing the rock layers, scientists estimate that Earth is 4.6 billion years old.

Explanation:

I don't understand these following questions, can someone please help me?1) find the work done by a 25 N force applied for 6 meters
2) calculate the potential energy of a 5 kg object sitting on a 3 m ledge
3) a rock is at the top of a 20 meter tall hill, the rock has a mass of 10 kg. how much potential energy does it have?

Answers

These questions are testing to see if you know
the formulas for work and potential energy ... or
if you know where to find them when you need them.

1). The formula for work is:

   Work = (force) x (distance) .

In this question: Work = (25 N) x (6 m) = 160 joules .
_____________________________

The formula for potential energy is

   PE = (mass) x (gravity) x (height) .

On Earth, gravity = 9.8 m/s²

This information gives you both of the other questions.

#2). PE = (mass) x (gravity) x (height)

       = (5 kg) x (9.8 m/s²) x (3m) = 147 joules

#3). PE = (mass) x (gravity) x (height)

       = (10 kg) x (9.8 m/s²) x (20 m) = 1,960 joules

What is the difference between creep and a landslide

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Creep is the slow downward flow of rock and soil down a low grade slope.A landslide is the movement of rocks or debris down a sloped section of land.

Creep creeps up lanslide comes down fast

Brief definition of gravity

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A force that pulls on mass to another

A force that pulls one mass .

If the bug has a mass of 0.05 kg and accelerates at 2 m/s2 whats the net force on the bug

Answers

Force = (mass) x (acceleration) = (0.05 kg) x (2 m/s²) = 0.1 Newton.

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