Most earthquakes are produced by the rapid release of which kind of energy stored in rock subjected to great forces?a. kinetic
b. thermal
c. elastic
d. mechanica

Answers

Answer 1

Answer: The correct answer for the question that is being presented above is this one: "c. elastic." Most earthquakes are produced by the rapid release of
elastic energy stored in rocks subjected to great forces. The greater the elasticity of the energy, the more it is subjected to great forces.

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Elements that are what tend to be in the what state at room temperature.
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What affect does doubling the net force have on the acceleration of the object (whenthe mass of the object stays the same)? Identify a set of two trials that support your answer to question 1

Answers

Answer: The acceleration doubles

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Explanation:

Consider a mass of 10 kg, so m = 10

Let's say we apply a net force of 20 newtons, so F = 20

The acceleration 'a' is...

F = ma

20 = 10a

20/10 = a

2 = a

a = 2

The acceleration is 2 m/s^2. Every second, the velocity increases by 10 m/s.

---------------

Now let's double the net force on the object

F = 20 goes to F = 40

m = 10 stays the same

F = ma

40 = 10a

10a = 40

a = 40/10

a = 4

The acceleration has also doubled since earlier it was a = 2, but now it's a = 4.

---------------

In summary, if you double the net force applied to the object, then the acceleration doubles as well.

Acceleration is directly proportional to the net force on an object, and inversely proportional to its mass.

So if an object's mass stays the same while the net force on it doubles, then its acceleration will also double.

We don't know anything about the "trials". This sounds like it might be a follow-up to a lab experiment that was performed when we weren't there.

We also don't know anything about "question 1".

Have researchers have now been able to cool substances to absolute zero

Answers

It's a law of nature, which I don't understand too well, that we can
cool things as close to Absolute Zero as we want to, but we can
never get all the way there.

I think that individual atoms and molecules have been cooled in
the laboratory to within a few thousandths of a Celsius degree
of it ... actually not too shabby an accomplishment !
____________________________________

WOW ! I just went and searched online for more information
on this subject. (You can't imagine what great stuff you can find
by doing that. You ought to try it some time.)

The 1997 Nobel Prize in Physics was awarded to a team of three
physicists who invented a method of using lasers to slow down the
motion of atoms, and that's the same thing as cooling them. They
were able to cool some atoms to a temperature of 240 millionths
of a degree above Absolute Zero !

A tennis ball with a speed of 15.7 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 14.444 m/s. If the ball is in contact with the wall for 0.0099 s, what is the average acceleration of the ball while it is in contact with the wall? Take "toward the wall" to be the positive direction. Answer in units of m/s 2 .

Answers

Answer:

-3044.848m/s^2

Explanation:

Initial velocity = 15.7 m/s (u)

Final velocity = -14.444 m/s (v) velocity after striking moving opposite direction.

Time = 0.0099 s

Average acceleration :

change in velocity/ total time

= V - U/t

= -14.444 m/s - 15.7 m/s/0.0099 s

= -30.144/0.0099 s

= -3044.848m/s^2

For which object is the force of gravity greatest: Earth, Moon, or Sun? Why?

Answers

Sun has the greatest gravitational force.

To find the answer, we need to know about the gravitational force.

What is gravitational force?

The force of attraction between any two objects due to the gravitational field is known as gravitational force.
Mathematically, it is defined as -GMm/r².

How does gravitational force vary with mass?

For a constant separation between two objects, the gravitational force is directly proportional to the mass of the objects.
So, greater the mass, more the gravitational force.

Thus, we can conclude that as the sun has more mass than that of earth and moon, so it has more gravitational force.

Learn more about the gravitational force here:

brainly.com/question/72250

#SPJ2

The sun. The more mass an object has, the greater gravitational pull it will have, as mass attracts other mass.

A person opens a door by applying a 10-N force perpendicular to it at a distance 0.90m from the hinges.

Answers

You faded out there before asking your question.
Here's some info that might be of interest:

Torque = (force) x (distance from the pivot) = (10 n) x (0.9 m) = 9 newton-meters

A bullet leaves a gun with a horizontal velocity of 100 m/s. Calculate the distance it would travel in 1.3 seconds. a 1247 m
b 0.013 m
c 130 m
d 76.92 m