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olga nikolaevna [1]
3 years ago
11

What current is used to power the Untied States power grid? O alternating current O direct current​

Physics
2 answers:
QveST [7]3 years ago
4 0

Answer:

alternating

Explanation:

it was right on my quiz

Alina [70]3 years ago
3 0

Answer:

Alternating

Explanation:

It is alternating because it is easy to distribute long distance.

Direct current is found in batteries and have large voltage drop over distance.

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8 0
3 years ago
Somewhere in the vast flat tundra of planet Tehar, a projectile is launched from the ground at an angle of 60 degrees. It reache
Nina [5.8K]

Answer:

R = 0.0503 m

Explanation:

This is a projectile launching exercise, to find the range we can use the equation

       R = v₀² sin 2θ / g

How we know the maximum height

      v_{f}² =v_{oy}² - 2 g y

      v_{f}= 0

      v_{oy} = √ 2 g y

      v_{oy} = √ 2 9.8 / 15

      v_{oy} = 1.14 m / s

Let's use trigonometry to find the speed

    sin θ = v_{oy} / vo

    vo = v_{oy} / sin θ

    vo = 1.14 / sin 60

    vo = 1.32 m / s

We calculate the range with the first equation

     R = 1.32² sin(2 60) / 30

    R = 0.0503 m

3 0
3 years ago
Two positive charges, 91 = 5 x 10-'[C] and q2 =1 x 10-9 [C], are
denis23 [38]

Answer:

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4 0
2 years ago
Assuming the ball's initial velocity was 57° above the horizontal and ignoring air resistance, what did the initial speed of the
UNO [17]

Answer:

V0 = 44.97m/s

Height above fence = 66.67m

Explanation:

The detailed calculation is done as shown in the attachment

7 0
3 years ago
How to the eath turn
mrs_skeptik [129]

Explanation:

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Read 2 more answers
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