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Annette [7]
3 years ago
15

How could gravitational potential energy be useful

Physics
1 answer:
Tpy6a [65]3 years ago
6 0
Hydroelectric dams convert the gravitational potential energy of falling water into electricity.
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If the moon disappeared what effect would this have on the earths tides
iogann1982 [59]
The moon has a huge impact on the tides. With the Moon gone, the oceans would become much calmer. The Sun still has its effect on them known as the solar tides. Surfers wouldn't be completely devoid of waves. 
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3 years ago
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A ball is thrown straight up from ground level. It passes a 2-m-high window. The bottom of the window is 7.5 m off the ground. T
slamgirl [31]

Answer:

u=14.48m/s

Explanation:

From the question we are told that:

Height of window h=2m

Height of window off the ground h_g=7.5m

Time to fall and drop t=1.3s

 

Generally the Newton's equation motion  is mathematically given by

 s=ut+\frac{1}{2}at^2

Where

h=ut+\frac{1}{2}at^2

2=u1.3-\frac{1}{2}*9.8*1.3^2

2=u1.3-8.281

u=7.91m/s^2  

Generally the Newton's equation motion  is mathematically given by

2as=v^2-u^2

Where

-2gh_g=v^2-u^2

-2*9.8*7.5=(7.91)^2-u^2

-147=62.5681-u^2

u=\sqrt{209.5681}

u=14.48m/s

Therefore the  ball’s initial speed

u=14.48m/s

8 0
3 years ago
Why does japan have so many volcanoes? <br><br> •paragraph
AlladinOne [14]

Answer:

This reason is that Japan is located along the Pacific 'ring of fire' which is an area along the Pacific plate boundaries where there is a lot of volcanic activity

Explanation:

Japan also lies on the edges of several continental and oceanic plates so this is why Japan experiences a lot of earthquakes.

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3 years ago
What emits infrared radiation?
Nimfa-mama [501]

Answer:

anything that contains atoms is the correct answer of given statement

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2 years ago
Which of these period three elements from the periodic table would you predict to be the MOST metallic and why? A) Al B) Si C) P
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Sorry I don’t even know
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