PHYSICS MIDDLE SCHOOL

The source of most of rhe energy we use today isfossil fuels

geothermal

nuclear

biomass

Answers

Answer 1
Answer:

Your answer should be A. Fossil Fuels. Hope this helps! =^-^= (Brainliest would be appreciated!)

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Carla pushes a toy car and lets it go. The toy car rolls and gradually comes to a stop. What would make the car stop?A. A force must be applied to the car in the direction opposite to that in which it is moving.B. A force must be applied pushing the car forward in the same direction as the moving car.C. A force must be applied in a direction pushing the car upward to make the car stop.D. A force must be applied in a direction pulling the car downward causing the car to stop.
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l o which of the following can move from one atom to another A. protons Msideus. B. neutrons C. electrons the nucleus
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What is the direction of transfer of energy in the waves produced?

Answers

Transverse waves occur when a disturbance causes oscillationsperpendicular (at right angles) to the propagation (the direction of energy transfer). Longitudinal waves occur when the oscillations are parallel to the direction of propagation.

Transverse waves occur when a disturbance causes oscillations perpendicular

What is a physical form in which a substance can exist?

Answers

The three physical forms are:

Solid, liquid, or gas.

Hard well organized solid Atoms are tightly packed together
Crystalline arrangement
High melting and boiling point.


The characteristics listed describe

A) ionic compounds.
B) covalent compounds.
C) diatomic molecules.
D) molecular compounds.

Answers

A) ionic compounds.

 quizlet has a great study set for this unit  

https://quizlet.com/_46l8d5

Answer:

a.

ionic compounds

Explanation:

Natural forces that can alter ecosystems include seasons and climate changes.

T or F

Answers

I’m not completely sure but I thought no that’s true. Sorry if I’m wrong.

What is the mass of a bowling ball if it has a weight of 80N?

Answers

Answer:

8.1577297 kilograms

Explanation:

because its only 80N when your talking about different metric but if you wanted to know it in killograms there is your answer I hope this helps and can you please make me brainliest :)))
8.1577297 Kilograms :)

How are Newton’s second and third laws of motion important to your everyday life?

Answers

Well, first off, Newtons second law of motion deals with the motion of accelerating and decelerating objects.
 We already know that from everyday life examples such as simply pushing a car that if 2 people push a car on a flat road it will accelerate faster than if one person was pushing it... Therefore, there is a relationship between the size of the force and the acceleration.  
 Now onto the third law of motion. First of all, what is the third law of motion? Well, a force is a push or a pull that acts upon an object as a results of its interaction with another object. Forces result from interactions! According to Newtons third law, whenever one object, and another object interact with each other, they exert forces upon each other. "For every action, there is an equal and opposite reaction."  The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. So, how is this important to everyday life you may ask? 
Well, the action-reaction force pairs are found everywhere in your body.
 For example, right now as I am typing, my tendons are exerting forces on bones, and those bones exert reaction forces on the tendons, as muscles contract, pulling my fingers on the keys. I press on those keys, and they press back on my fingers. See? Since im pressing on the keys, the press back on me. Its opposite from eachother, as stated in the quite above. "For every action, there is an equal and opposite reaction." 
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 ~I hope this helped :)
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If a plane has an airspeed of 40 m/s and is experiencing a crosswind of 30 m/s, what is its ground speed in m/s?