3 years ago

use what you have learned so far about heat transfer to explain how hot rocks can be used to make steam?

1 answer:

7 0

If you throw water on anything hot enough, the liquid water turns to steam. With this method, you can create an energy source.

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barxatty [35]

Answer:

(D) the sphere

Explanation:

The bodies given are Disk and Solid sphere (uniform sphere)

Moment of inertia of the bodies are

I(disk) = $\frac{MR^2}{2}$

I(sphere) = $\frac{2MR^2}{5}$

Since the moment of inertia of sphere is less than that of disk, therefore sphere will reach the bottom first.

3 0

3 years ago

Luden [163]

From the definition of average velocity,

$\bar v=\dfrac{\Delta y}{\Delta t}=\dfrac{49\,\mathrm m}t$ ,

and the fact that constant acceleration means

$\bar v=\dfrac{v_f+v_0}2=\dfrac{30\,\frac{\mathrm m}{\mathrm s}}2=15\,\dfrac{\mathrm m}{\mathrm s}$

we can solve for the time $t$ :

$15\,\dfrac{\mathrm m}{\mathrm s}=\dfrac{49\,\mathrm m}t\implies t=3.3\,\mathrm s$

7 0

2 years ago

taurus [48]

It might be c I'm not sure either. Hope I helped

6 0

3 years ago

Neko [114]

Answer:

I think its 2. It would decrease

Explanation:

Hope this helps

4 0

2 years ago

exis [7]

Light will travel more slowly in a material with a higher index of refraction

4 0

3 years ago