2 years ago

Essential Question: Where does energy come from and where does it go? How is energy transferred and converted?

1 answer:

6 0

Explanation:

Energy transfer is the movement of energy from one location to another. For example, when electricity moves from a wall plug, through a charger, to a battery.

Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy.

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An airplane increases its velocity from 60m/s to 80m/s in a time of 10s.

Elenna [48]

$\huge\fbox{Answer ☘}$

$acceleration \: = \frac{v - u}{t} \\ = > \frac{80 - 60}{10} \\ \\ = > \frac{20}{10} \\ \\ = > 2m \: s {}^{ - 2}$

hope helpful ~

4 0

2 years ago

Which example is NOT the proper use of a casting of a toolmark?

Reika [66]

When we say toolmark, this describes as the mark that is produced by a particular tool. This is typically used in forensic science for identification. Based on the examples above, the one that is not the proper use of casting of a toolmark is option B. Hope this helps.

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3 years ago

The driver of a car traveling at a speed of 27 m/s slams on the brakes and comes to a stop in 3 s. If we assume that the speed c

NISA [10]

Answer:

Average speed = 13.5 m/s

Explanation:

Since the car is running at a speed of 27 m/s and it stops after 3 seconds by applying the brake. Therefore, the initial speed of the 27 m/s and final speed is 0.

Use below formula to find the average speed :

Average speed = (Initial speed + final speed ) / 2

Average speed = (27 + 0 ) / 2

Average speed = 13.5 m/s

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3 years ago

What is the color of the stars with the highest surface temperature and what is the color of the stars with the lowest surface t

fenix001 [56]

It is a basic color like whit or yellow

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3 years ago

Read 2 more answers