I believe the sun is the primary source of energy for Earth's weather system. The sun is the primary energy source for Earth's climate system which is the first set of essential principles of climate sciences. Additionally, it is the primary source that drives all weather events, including precipitation, hurricane and tornadoes. The sun drives the hydrologic cycle, and makes life on Earth possible.
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<span><span>Velocity is a vector, and the initial and final ones are in opposite directions.
There must have been acceleration in order to change the direction of motion.</span>
A) No. The initial and final velocities are the same.
This is all wrong, and not the correct choice.
It's "Yes", and the initial and final velocities are NOT the same.
B) Yes. The ball had to slow down in order to change direction.
This is poor, and not the correct choice.
The "Yes" is correct, but the explanation is bad.
Acceleration does NOT require any change in speed.
C) No. Acceleration is the change in velocity. The ball's velocity is constant.
This is all wrong, and not the correct choice.
It's "Yes", there IS acceleration, and the ball's velocity is NOT constant.
D) Yes. Even though the initial and final velocities are the same, there is a change in direction for the ball.
This choice is misleading too.
The "Yes" is correct ... there IS acceleration.
The change in direction is the reason.
The initial and final velocities are NOT the same. Only the speeds are.
</span>
Answer:
a) 
b) 
c) 
Explanation:
Given:
- diameter of hole in the tank,
- position of the hole form the tank bottom,
- initial level of turpentine in the tank before the leakage,
- level of turpentine in the tank after the repair of leakage,
- diameter of the tank,
- density of turpentine oil,
a)
Now, volume of turpentine spilled:
where:
area of the cross section of the tank's volume
b)
When the tank was full the liquid level was highest:
so velocity form the height of the hole will be given as:
<u>Now we have the flow rate of the spillage given by:</u>
c)
Total time the leak was active can be calculated as:
