The answer is B this can be easily shown if you have ever gotten up on a bus its the same effect but if you have trouble just elimination works A and D are outrageous and wrong C i can see the confusion but a train or a bus making you go in motion but your body wants to keep moving so it keeps in motion
Answer:
4N to the left. No it is not balanced.
Explanation:
8 -4 = 4 N of force
Balanced would be if they equaled zero, so 8 to the left and 8 to the right
Answer:
- The thermal efficiency is 0.4113.
Explanation:
We know that the thermal efficiency is the ratio of work done by the engine over the heat taken

Now, how much work the engine do in a cycle?
We know that the work done in a cycle must be equal to the heat taken minus the heat rejected

So, the thermal efficiency will be:



Putting the values of the problem


Answer:
block 2 or 4
because of the distribution of weight and force being applied to the object