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Pie
2 years ago
13

Helpppppppppppppppppppp

Physics
1 answer:
xxTIMURxx [149]2 years ago
3 0

Answer:

I think d or b maybe it's d

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Michael Faraday was one of the first scientists to experiment with motors. How did Faraday design his first motor?
Margaret [11]
The correct option is D. 
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A ball is thrown downward with an initial velocity of 12.1 m/s. How long will it take to reach a velocity of -24.5 m/s? (Negativ
xxMikexx [17]

Answer:

Explanation:

The sig figs are off in the answer (unless you use -9.81 for the acceleration due to gravity. My classes always use -9.8, which is 2 sig figs. But nevertheless, we can solve it!) Use the velocity formula:

v_f=v_0+at where vf is the final velocity, v0 is the initial velocity, a is the acceleration due to gravity, and t is the time in seconds. Filling in, using the fact that both the velocities are negative since the ball is going down:

-24.5 = -12.1 +(-9.8)t or

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5 0
3 years ago
Den pushes a desk 400 cm across the floor he exerts a force of 10 no for 8 so to move the desk what is the power in put
Licemer1 [7]
You have to convert 400 cm into meters.
I'm assuming you mean a force of 10 Newtons in 8 seconds.
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3 0
2 years ago
A girl is riding a bike with a velocity of 7 m/s. The bike undergoes an acceleration of 2 m/s2. What is the velocity of the bike
Dmitry_Shevchenko [17]

From the information provided, the velocity after 2 seconds is  11 m/s.

From the equations of motion;

v = u + at

Where;

v = final velocity

a = acceleration

t = time taken

The initial velocity of the bike was 7 m/s and its acceleration is  2 m/s2. This change occurred within a time of 2 seconds.

Hence;

v = 7 + 2(2)

v = 11 m/s

The velocity after 2 seconds is  11 m/s.

Learn more: brainly.com/question/12550364

4 0
3 years ago
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