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masya89 [10]
4 years ago
10

I need an answer for 1 and 2 pleaseeee

Physics
1 answer:
NemiM [27]4 years ago
7 0

Answer:

I'm not sure, its either 1 or 2

Explanation:

Water melts ice because it is at a higher temperature than the ice, so heat energy is transferred from the water to the ice. Since the scientific principle at work here is the idea of heat transfer, it is not necessary that water be used to melt ice.

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What is the speed of a wave that has a frequency of 125 Hz and a wavelength of 1.25 meters? Express your answer to the nearest w
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3 years ago
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A car engine burns fuel and has moving parts. Sometimes, an engine can become too hot and overheat. What can prevent the engine
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4 years ago
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A spring stretches 0.018 m when a 2.8-kg object is suspendedfrom its end. How much mass should be attached to this spring sothat
agasfer [191]

Answer:

m = 4.29 kg

Explanation:

Given that,

Mass of the object, m = 2.8 kg

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mg=kx

k=\dfrac{mg}{x}

k=\dfrac{2.8\times 9.8}{0.018}

k = 1524.44 N/m

Since, \omega=\sqrt{\dfrac{k}{m}}

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m=\dfrac{1524.44}{4\pi^2 \times 3^2}

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4 0
3 years ago
Which object has a net force of -68 N?
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