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Zielflug [23.3K]
3 years ago
5

Is true that the earth's crust is made up of many tectonic plates?

Physics
1 answer:
RUDIKE [14]3 years ago
4 0
Yes, it is true.<span> In the 20th century, researchers realized that the </span>Earth's crust<span> is not one piece, but is </span>made up of many<span> huge </span>tectonic plates<span> upon which the continents ride.</span>
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Which is not a characteristic of chemical energy? A. chemical change B. breaking bonds C. splitting nuclei D. reacting substance
Delvig [45]

The correct answer is C. Splitting Nuclei.

Splitting nuclei is not a characteristics of chemical energy.

Chemical energy is termed as the energy which results when there is chemical reaction. Chemical energy is being stored in molecules which makes substance and bonds of atoms.

In order for our bodies to function well they need chemical energy. During photosynthesis plants perform chemical reaction each and every day.

3 0
3 years ago
Read 2 more answers
A heat pump has a coefficient of performance that is 60% of the Carnot heat pump coefficient of performance. The heat pump is us
Nataliya [291]

Answer:

T_C=118.8 K= 154.2°C

Explanation:

COP_max of carnot heat pump= \frac{T_{H} }{T_{H}-T_{C} }

where T_H and T_C are temperatures of hot and cold reservoirs

Also COP=\frac{Q_H}{W}

in the question COP= \frac{60}{100} \times COP_{max}

⇒\frac{Q_H}{W} =\frac{60}{100}\times\frac{T_H}{T_H-T_C}

heat is added directly to be as efficient as via heat pump

Q_H= W

and T_H= 24° C= 297 K

1=\frac{60}{100}\times \frac{297}{297-T_C}

on calculating the above equation we get

T_C=118.8 K

the outdoor temperature for efficient addition of heat to interior of home

T_C=118.8 K= 154.2°C

6 0
3 years ago
How can a cyclist's acceleration change even if its velocity remains constant?
aleksley [76]

It can't.  Acceleration IS a change in velocity.


5 0
4 years ago
Which formulas might be used to find the velocity based on a position-time graph?
Alex787 [66]
The formula to get the velocity is V=D/T. First you need to determine the distance and time at a certain point and plug it into the equation and that will be your velocity at that point. To get it between two points you complete the directions two times and find the average or use the slope formula, slope = rise/run; slope = (y2 - y1) / (x2 - x1). 
6 0
4 years ago
a moving freight car collides with an identical one that is at rest what happen to the second car after the collison
irakobra [83]
It moves backwards do to the impact. this is because force can not be created nor destroyed so it is transferred.<span />
7 0
3 years ago
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