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SashulF [63]
3 years ago
6

The current supply from generating plants is alternating current. True or false?

Physics
2 answers:
Finger [1]3 years ago
4 0
The correct answer would be true.<span />
Leno4ka [110]3 years ago
3 0
The answer is True since thats what usually goes on
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Explanation:

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3 years ago
Sara is riding her bike down the road at 35 km/hr. She starts to peddle faster as she
steposvetlana [31]

Answer:

Distance covered to top of the hill was : 1.755 km

Explanation:

Initial velocity = 35 km/hr

Acceleration = 2.0 km/hr²

Time taken to accelerate = 3 minutes = 3/60 hours = 1/20 hours

Formula for acceleration : a = Δv /t  

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3 years ago
A block with mass m =6.4 kg is hung from a vertical spring. When the mass hangs in equilibrium, the spring stretches x = 0.28 m.
Zanzabum

Answer

given,

mass of block (m)= 6.4 Kg

spring is stretched to distance, x = 0.28 m

initial velocity = 5.1 m/s

a) computing weight of spring

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k = \dfrac{mg}{x}

k = \dfrac{6.4 \times 9.8}{0.28}

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    \omega = \sqrt{\dfrac{k}{m}}= \sqrt{\dfrac{224}{6.4}} = 5.92 \ rad/s

   f = \dfrac{1}{2\pi}\sqrt{\dfrac{k}{m}}

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  f =0.94\ Hz

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d)  a_{max} = v \omega

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    A = \dfrac{4.04}{5.92}

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    Y =- 0.682 \times sin (5.92 \times 0.42)

    Y =- 0.42

Force =m \omega^2 |Y|

          =6.4 \times 5.92^2\times 0.42

F = 94.20 N

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3 years ago
A child is pushing a merry-go-round. The angle through which the merry-go-round has turned varies with time according to θ(t)=γt
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Answer: I think it’s D.

Explanation:

4 0
2 years ago
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