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Serjik [45]
3 years ago
7

Why do opaque materials become warmer when light shines on them?

Physics
1 answer:
gavmur [86]3 years ago
6 0

Opaque materials absorb all the light that shines on them.  None of it comes out the other side.  That's why they're opaque.

Opaque materials become warmer when light shines on them, because <em>they absorb the energy</em> carried by the light that shines on them.  (According to the law of Conservation of Energy, that energy has gotta go somewhere.)

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18 gallons * 22 miles / 1 gallon
Which simplifies to 18 * 22 miles = 396 miles.
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4 years ago
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Zachary adds 26.45 g to 2.55 g. How many significant figures should his answer have?
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A 25kg mass is suspended at the end of a horizontal, massless rope that extends from a wall on the left and from the end of a se
patriot [66]
<h2>Answer:20.97g N,32.63g N</h2>

Explanation:

We consider the forces at the knot.

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T_{2}Sin(50^{0}}) is the vertical component of tension T_{2} at the knot.

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The horizontal forces are

-T_{1} is the tension in the rope acting left.

T_{2}Cos(50^{0}) is the horizontal component of tension T_{2} acting towards right.

Since the knot has no mass,it is always in equilibrium.

So,the sum of forces acting on it will be zero.

Balancing vertical forces gives,

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Balancing horizontal forces gives,

T_{2}Cos(50^{0})-T_{1}=0

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Answer:

Good question

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PPs why do or should anyone want to walk through walls?

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