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3 years ago

Following an inelastic collision, what can kinetic energy be converted into? Check all that apply.

2 answers:

6 0

Kinetic energy might be converted to thermal energy in the case of an inelastic collision, though I don't see a list to check from.

Margarita [4]3 years ago

6 0

Answer: heat, potential energy, sound

Explanation: just finished the test

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What mass of a material with density rho is required to make a hollow spherical shell having inner radius r1 and outer radius r2

Margarita [4]

Answer:

$m=\rho\times \frac{4}{3} \times \pi \times(r_2^3-r_1^3 )$

Explanation:

We have to make a hollow sphere of inner radius $r_1$ and outer radius $r_2$ .

Then the mass of the material required to make such a sphere would be calculated as:

Total volume of the spherical shell:

$V_t=\frac{4}{3} \pi.r_2^3$

And the volume of the hollow space in the sphere:

$V_h=\frac{4}{3} \pi.r_1^3$

Therefore the net volume of material required to make the sphere:

$V=V_t-V_h$

$V=\frac{4}{3} \pi(r_2^3-r_1^3)$

Now let the density of the of the material be $\rho$ .

Then the mass of the material used is:

$m=\rho.V$

$m=\rho\times \frac{4}{3} \times \pi \times(r_2^3-r_1^3 )$

4 0

3 years ago

A 5 N force pushes on the right side of a box. At the same time, a 10 N force pushes on the left side of the box. What happens t

olya-2409 [2.1K]

The answer is C as there is more force on the left side ( excess of 5 N) which therefore pushed it to the right with a force of 5 N!

8 0

3 years ago

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Aliun [14]

Elements to the left tend to form positive ions is the right answer mark me brainlist

4 0

3 years ago

A truck hits a brick wall with a force of 120 N. The collision takes 2.0 seconds.

levacccp [35]

Impulse=force*time
impluse=120N*2.0s
impluse=240 Ns

7 0

4 years ago

Why does the desert sand, next to a lake, heat up quicker than the water in the lakes

ICE Princess25 [194]

Water is a slow conductor of heat. Land absorbs heat quicker, so the sand next to the lake will heat up quicker than water.

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3 years ago