The answer is A. Or the first option. Pressure is changed by lowering the pressure, not reducing the volume. You would assume its C but its A.
Explanation:
225=m (2.20m/s2 which give m=16kg I used newtons second law to fins the required average force
Answer:
D
Explanation:
She says that the object of the experiment is to see how far the string stretches given a mass attached to the string.
The only thing that is at issue is either the mass or the amount the string stretches.
Nothing else matters.
The dependent variable therefore is the amount the string stretches. So the last choice is the answer.
The sled experiences friction against the ground
Answer:
Explanation:
In an ideal transformer the relationship between the voltages is proportional to the ratio between the number of turns of the windings. Thus:
Where:
So, solving for 
