PHYSICS MIDDLE SCHOOL

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

Answers

Answer 1
Answer: The three physical forms are:

Solid, liquid, or gas.

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I need all or some answers to these questions

Answers

1. it`s due to the gravitational pull of earth which causes Moon to orbit the Earth.

2. No,it`s not always noticeable.You must have heard that earth pulls apple so it falls downward but the fact is apple also pulls earth but the pull isn`t noticeable.

3. I have only one thing that is the distance between the masses.

4. The quantity of matter contained in a body is called it`s mass whereas weight of an object is the force of attraction with which it is attracted towards the centre of a planet.Mass of an object is constant everywhere bt weight of an object varies from place to place.Mass is measured by beam balance whereas Weight is measured by spring balance.

5. You will fall back on the surface of earth.It happens because of the force of gravity of the earth.

6. If u jump on the moon u will float away(I guess).

7. Weightlessness is a condition where weight of an object is experienced to be zero.The mass doesn`t change as it remains constant everywhere.I will add an image for this one which may help you.

What is the period of a wave generated by anearthquake, if it has a wavelength of 500 meters and a
speed of 5,000 meters per second?

Answers

Answer:

Period T = 0.1 second

Explanation:

Given that the

wavelength = 500 meters

speed V = 5000 meters per second

The wave speed is the ratio of wavelength to period of the wave. That is,

V = λ/T

Where

V = wave speed (m/s)

λ = wavelength (m).

T = period (s)

Using the formula above gives

5000 = 500/T

Make T the subject of formula

T = 500/5000

T = 0.1 s

Newton's universal law of gravitation says that every object exerts a force on another object. The shuttle has a gravitational force with Earth, the moon, and whatever planet it is near. This force prevents the shuttle from drifting.Question 1 options:
True
False

Answers

the correct answer is true

Please Help!!! Which is a hazardous waste?Plastic

Wood

Adhesives

Cooking oil

Answers

Plastic i believe because if its melted it sweats toxins that can cause serious harm

Answer: ADHESIVES

Explanation: CORRECT ON K12 QUIZ

A bullet travels at 850 m/s how long will it take a bullet to go 1 km

Answers

1 s / 850 m = x s / 1000 m
(1 / 850) * (1000) = x
1.176 s = x

The blank are the specialized tubes in the kidneys in which waste is collected from the blood

Answers

Nephrons are the names of the tubes that collect the waste and transport to kidney
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