1. Confident in Reasoning: Douglas is truthful of his reasoning skills to yield good judgments.
2. Analytical: <span>Douglas is habitually alert to potential problems and vigilant in anticipating consequences and trying to foresee short-term and long-term outcomes of being primary care taker for his wife. </span>
Answer:
A) 12P
Explanation:
The power produced by a force is given by the equation

where
W is the work done by the force
T is the time in which the work is done
At the beginning in this problem, we have:
W = work done by the force
T = time taken
So the power produced is

Later, the force does six times more work, so the work done now is

And this work is done in half the time, so the new time is

Substituting into the equation of the power, we find the new power produced:

So, 12 times more power.
Answer:
T = 60 s
Explanation:
There are 6 poles on the track which are equally spaced
so the angular separation between the poles is given as


so the angular speed of the train is given as


now we have time period of the train given as



I’ll decompose each answer. My guess is answer C
A.) The force of gravity acts downward on the box, it plays no role in the horizontal acceleration assuming friction is nonexistent.
B.) The normal force acts upward on the box, it also plays no role in the horizontal acceleration.
C.) The reaction force on the box would be talking about Newton’s 3rd law. The reaction force acts on Lien and not the box. So she herself would have to overcome that reaction force to get the box moving. I believe this is the right answer
D.) The push force would be the force she applied. She wouldn’t have to overcome her own force that correlated with the box. She’d have to overcome the reaction force like I explained in answer C.