Heat due to the amount of density difference within a fluid
Answer:
the answer is A
Explanation: The vertical temperature line indicates no change in temperature at those altitudes.
Answer:
The angular acceleration is zero
Explanation:
When an object is in rotational motion, it has a certain angular velocity, which is the rate of displacement of its angular position.
This angular velocity can change or remain constant - this is given by the angular acceleration, which is:

where
is the change in angular velocity
is the time elapsed
Therefore, the angular acceleration is the rate of change of angular velocity.
In this problem, the bicycle rotates at a constant angular velocity of

This means that the change in angular velocity is zero:

And so, that the angular acceleration is zero:

Geologists do not use a minerals color or streak to identify them because some minerals can have the same streak and color but the correct answer is
b) color
The third one sliding friction
Explanation: