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xxTIMURxx [149]
3 years ago
14

You often hear people, particularly TV announcers, talk about a "high rate of speed." What do you think they mean? According to

the specifics of physics definitions, what are they really saying?
Physics
1 answer:
NikAS [45]3 years ago
3 0

TV announcer intend to mean "chnage of speed or velocity" by "High rate of speed" and in Physics domain it would mean "acceleration"

Explanation:

It is common to observe TV announcer saying certain events were occurring “with a high rate of speed”. By saying this they intend to mean that the event was rapid in its occurrence. It can also mean that the change in speed of the happening was very rapid/fast.

However, the same terms connote altogether a different expression in Physics domains. Speed is a scalar quantity with no direction. Hence most of the times speed mean velocity when the direction is also provided. “high rate of speed” would mean a change of velocity per unit time which is acceleration. Hence in Physics domain, the term would stand for acceleration.

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The diagram below shows the different phase transitions that occur in matter.
Margaret [11]

Answer:A

Explanation:matter normally occurs in three phases;solid, liquid and gases. They may change from one phase to another due to temperature difference.

The molecules that makes up solids are held together by bonds. When heat is added,the molecules begin to move as a result,the bonds break and it turns to liquid.this process is called melting. The reverse of melting is freezing.

Liquid are made up of molecules that moves more freely than solids. When heat is added to liquid,the molecules gain more energy and begins to move faster. This causes them to turn to gases.

This process is called evaporation. It occurs at different temperature for different substances.

The particles of gases move more faster and are separated by large distances. A gas can change back to a liquid through condensation.

7 0
3 years ago
Read 2 more answers
What could you do to increase the electric potential energy between two
SSSSS [86.1K]

Answer:

Increase the charge of one particle by a factor of 16

Explanation:

3 0
2 years ago
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70-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 844 N. What is the acceleration o
mario62 [17]

Answer : The acceleration of the elevator is, 2.25m/s^2

Explanation :

Formula used to calculate the acceleration of the elevator is:

F=mg+ma\\\\ma=F-mg\\\\a=\frac{F-mg}{m}

where,

F = force = 844 M

m = mass of man = 70 kg

g = acceleration due to gravity = 9.8m/s^2

a = acceleration of the elevator = ?

Now put all the given values in the above formula, we get:

a=\frac{F-mg}{m}

a=\frac{844N-(70kg\times 9.8m/s^2)}{70kg}

a=2.25m/s^2

Thus, the acceleration of the elevator is, 2.25m/s^2

4 0
3 years ago
Which of the following is a vector quantity?
lutik1710 [3]

Since vectors are essentially quantities that have direction, D must be the answer as it contains a direction (down) while the other ones do not.

6 0
3 years ago
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Which term is described as the height of a wave from its rest position to its crest?
tatyana61 [14]

Answer:

A)

Explanation:

amplitude is the amount of amps or decibals a sound wave is and is measured by going high and low depending on the sound.

3 0
3 years ago
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