The correct answer is - a. was a sign of danger.
Once the people saw that the ocean waters are receding and were living vast space without water behind them, they knew that something big and very dangerous will happen. And in fact it did. The water that was sucked in in the place were there was a crack on the ocean floor, got shot back under big pressure and it had very big speed, as well as having waves that were destroying anything on their way.
Answer:
Explanation:
Given
mass of disk
radius of disc
mass of ring
Force
Total moment of inertia
=Moment of inertia of Disc +Moment of Inertia of ring
Now Torque is
Now using
here
Answer:
<em>The car's average acceleration is</em> .
Explanation:
<u>Constant Acceleration Motion</u>
It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.
Being vo the initial speed, a the constant acceleration, vf the final speed, and t the time, the following relation applies:
If we need to find the acceleration, we solve the above equation for a:
The car accelerates from rest (vo=0) to vf=70 m/s in t=7 seconds. Substitute the values into the formula:
The car's average acceleration is .
<u>Note</u>: The choices are not very clear, but the second choice seems to be the correct answer.
Kinetic energy and velocity are at zero when the magnets are held apart, and both increase rapidly when they are released and move together. Energy stored in the magnetic field decreases.
B. The object stops from a velocity of 12.0 m/s