PHYSICS MIDDLE SCHOOL

2. How much work does gravity do in causing a 6 kg hammer to fall to the ground from a height of 10 m?​

Answers

Answer 1
Answer:

Answer: heavy objects will have a higher terminal velocity than light objects. ... It takes a larger air resistance force to equal the weight of a heavier object. A larger air resistance force requires more speed.) Therefore, heavy objects will fall faster in air than light objects.


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HIGH SCHOOL

In a nuclear fusion reaction, what state is matter in? a. gas
b. solid
c. liquid
d. plasma

Answers

the matter is in chemical plasma
 
Alternatively d)


I hope I was helpfull




Answer:

plasma

Expl

This other guy said it was plasma

COLLEGE

In what ways do observed extrasolar planetary systems differ from our own solar system?

Answers

Answer:

Extrasolar solar system differ from our solar system in many ways such as of mass, size and shape of the planet, as well as temperature or amount of heat received in each planet.

Explanation:

An extrasolar planet is a planet outside the Solar System, while the Solar System orbit around the sun  as a result of the gravitational pull of the sun.

Thus, we can say that the major difference between extrasolar planetary systems and solar system is that in solar system, planets orbit around the Sun, while in extrasolar planetary systems, planets orbit around other stars.

All of the planets in our solar system orbit around the Sun. Planets that orbit around other stars are called exoplanets or extrasolar.

Extrasolar solar system differ from our solar system in many ways such as of mass, size and shape of the planet. They also differ in terms of temperature, because the temperature in each planet in solar system depends on its distance from the sun while that of the extrasolar depends on the activities of the star.

MIDDLE SCHOOL

How is velocity different from speed? A- Velocity is based on distance.
B- Velocity includes direction.
C- Velocity can be an average or instantaneous.

Answers

Answer:

Its B i literally just did it

Explanation:

MIDDLE SCHOOL

A race car travels around a curve at a constant speed. Is the race car accelerating?

Answers

no. the race care is at a constant speed. its staying the same speed.

No because if it is at a constant speed, that means it is not changing in speed
MIDDLE SCHOOL

Which of the following is an example of the doppler effect

Answers

"A train blows its horn as it travels towards you, and you perceive the pitch of the horn to increase" is an example of the Doppler effect.

Explanation:

Christian Doppler, physicist from Austria was the first to launch "Doppler effect" in 1842. It is variation in wave frequency in the response to a body or object which move nearby the waves sources. The phenomenon is observed in sound, light and other waves.

As the source of the wave moves closer to the listener the frequency of the wave increases in sound waves while the sound starts to faint when the source moves away.

Doppler effect is applicable in a mechanism called red shift or blue change in order to calculate the velocity at which stars and galaxies approach or recede from us.

Answer:

The siren of a police car sounds different when the car is coming toward you than it does when it passes.

Explanation:

The Doppler effect refers to the apparent change in the frequency of a sound wave when the distance between the source of the sound and the listener changes at a rapid pace. When a race car zooms past you, the change in the sound is very dramatic because of the rapid change in the distance between you and the source of the sound.

PF

MIDDLE SCHOOL

What is beach reclamation?

Answers

It is an act of reclaiming a beach from an erosion. 
Beach reclamation is the act of reclaiming a beach from erosion.
COLLEGE

The magnitude of the charge of the electron is: a. Exactly the same as the magnitude of the charge of the proton.
b. Much greater than the magnitude of the charge of the proton.
c. Zero.
d. Much less than the magnitude of the charge of the proton.
e. About the same as the magnitude of the charge of the proton.

Answers

Answer:

a. Exactly the same as the magnitude of the charge of the proton.

Explanation:

The elementary charge (e) is the smallest electric charge that can exist in the universe. Any positive or negative electric charge can be expressed as a multiple of the elementary charge, since is the electric charge carried by a single proton or, equivalently, the magnitude of the electric charge carried by a single electron (-1e).

MIDDLE SCHOOL

A circuit can be defined as _____________. A .Something that doesn’t allow electricity to travel through it easily
B. A place that electricity likes to hang out
C. A closed path through which electrical charges can flow
D. Something that allows electricity to travel through it easily

Answers

Your answer is D it sounds right
I would go with C. It makes the most sense to me.
MIDDLE SCHOOL

Which would cause the greatest increase in the acceleration of a satallite

Answers

A decrease in the radius and an increase in the tangential speed, I'm 100% sure
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