I believe the correct answer would be kimberlite. Diamonds are usually found in pipes 50 to 200 m across made of kimberlite. It is an igneous rock that is known to contain traces of diamonds. It is named base on the town where it was discovered which is Kimberley, South Africa.

7 0

3 years ago

An engine has an energy input of 125j and 35 j of that energy is transformed into useful energy

Tatiana [17]

The engine's efficiency is (35J)/125J) = 28% .

Do you have a different question to ask ?

5 0

3 years ago

Which of the following is NOT a potential result of climate change?

stepladder [879]

Answer:

My answer :

Explanation:

sea-level change

4 0

3 years ago

If a cell phone is dropped from a very tall building, how far has the phone fallen after 2.7 seconds, neglecting air resistance?

Zielflug [23.3K]

The free fall of the phone is an uniformly accelerated motion toward the ground, with constant acceleration equal to
$g=9.81 m/s^2$

So, assuming the downward direction as positive direction of the motion, since the phone starts from rest the distance covered by the phone after a time t is given by
$y(t) = \frac{1}{2}gt^2$
And if we substitute t=2.7 s, we find the distance covered:
$y(t)= \frac{1}{2}(9.81 m/s^2)(2.7 s)^2=35.8 m$

6 0

3 years ago