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kiruha [24]
2 years ago
5

Which will heat up fast, metal or cotton?

Physics
2 answers:
Tom [10]2 years ago
5 0

Answer:

Metal heats fast but cotton combusts at a low temperature it would depend on the amount and conditions of each.

Explanation:

equal amounts metal will heat faster

more cotton metal will heat faster

less enough amount of cotton, cotton will combust and therefore it will have heated faster in that case.

metal is a great conducter of heat and cotton is just very flammable

solniwko [45]2 years ago
4 0

Answer:

Cotton my dude

Explanation:

Tis very flammable

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The angle of reflection is the angle between the normal line and the___?
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Answer:

Reflected line

Explanation:

The angle between the reflected ray and the normal ray is called angle of reflection.

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3 years ago
What was the main aim behind Wegener's continental drift theory?
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D.all of the above is the answer for this question
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3 years ago
An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +44 ft/s2. After some time t1,
mash [69]

Answer:

a) t₁ = 4.76 s, t₂ = 85.2 s

b) v = 209 ft/s

Explanation:

Constant acceleration equations:

x = x₀ + v₀ t + ½ at²

v = at + v₀

where x is final position,

x₀ is initial position,

v₀ is initial velocity,

a is acceleration,

and t is time.

When the engine is on and the sled is accelerating:

x₀ = 0 ft

v₀ = 0 ft/s

a = 44 ft/s²

t = t₁

So:

x = 22 t₁²

v = 44 t₁

When the engine is off and the sled is coasting:

x = 18350 ft

x₀ = 22 t₁²

v₀ = 44 t₁

a = 0 ft/s²

t = t₂

So:

18350 = 22 t₁² + (44 t₁) t₂

Given that t₁ + t₂ = 90:

18350 = 22 t₁² + (44 t₁) (90 − t₁)

Now we can solve for t₁:

18350 = 22 t₁² + 3960 t₁ − 44 t₁²

18350 = 3960 t₁ − 22 t₁²

9175 = 1980 t₁ − 11 t₁²

11 t₁² − 1980 t₁ + 9175 = 0

Using quadratic formula:

t₁ = [ 1980 ± √(1980² - 4(11)(9175)) ] / 22

t₁ = 4.76, 175

Since t₁ can't be greater than 90, t₁ = 4.76 s.

Therefore, t₂ = 85.2 s.

And v = 44 t₁ = 209 ft/s.

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2 years ago
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13.6) When any boat displaces a weight of water equal to its own weight, it floats.
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3 years ago
Which of the following would decrease your carbon footprint?
salantis [7]
The third option seems correct. Using any bag more than once will help in decreasing the carbon foot print.

This isds beause, if you use paper bag once only, then paper bag is being utilised and more and more paper is being used. So the best way is to use the bag more than once, whichever bag u are using.
7 0
3 years ago
Read 2 more answers
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