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vovangra [49]
2 years ago
7

Janet was pulling a box that weighed 20N across 5m. How much work did she exert?

Physics
1 answer:
Galina-37 [17]2 years ago
6 0

Answer:

100nm

Explanation:

Work=Force×distance

=20×5

=100nm

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The most common type of dam is an impoundment hydroelectric plant, which consists of a dam across a river, and a reservoir (lake
Naya [18.7K]

Answer:

A turbine spins the water to generate electricity.

Explanation:

This is impoundment facility is called a hydro electric power dam, it is basically a big hydropower system which uses the dam to store river water in a reservoir. The water released from the reservoir flows directly through a turbine, the turbine spins it, which afterwards activates a generator to generate electricity.

6 0
3 years ago
How is kinetic energy related to the distance
astra-53 [7]

Kinetic energy =

1/2 (mass) • (velocity squared).

I don't see distance in that formula anywhere, so they're not related.

8 0
3 years ago
Read 2 more answers
Which one of the following is correct? *
slamgirl [31]

Answer:

uniform acceleration motion is a motion with constant acceleration.

6 0
3 years ago
if something is shot straight up in the air at a speed of 17 m/s, how much time before I it will hit the ground ​
wolverine [178]
About 17.2 square feet of inches
8 0
2 years ago
Find the value of F1 + F2 + F3.<br>​
Dovator [93]

Answer:

F = 0.78[N]

Explanation:

The given values correspond to forces, we must remember or take into account that the forces are vector quantities, that is, they have magnitude and direction. Since we have two X-Y coordinate axes (two-dimensional), we are going to decompose each of the forces into the X & y components.

<u>For F₁</u>

<u />F_{y}=2[N]<u />

<u>For F₂</u>

F_{x}=2*cos(60)\\F_{x}=1[N]\\F_{y}=-2*sin(60)\\F_{y}=-1.73[N]

<u>For F₃</u>

<u />F_{x}=-1*sin(60)\\F_{x}=-0.866[N]\\F_{y}=1*cos(60)\\F_{y}=0.5 [N]<u />

Now we can sum each one of the forces in the given axes:

F_{x}=1-0.866=0.134[N]\\F_{y}=2-1.73+0.5\\F_{y}=0.77[N]

Now using the Pythagorean theorem we can find the total force.

F=\sqrt{(0.134)^{2} +(0.77)^{2}}\\F= 0.78[N]

8 0
3 years ago
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