Answer:
Because the log is hollow or is less dense
Explanation:
If a log has little density, it will float. While sand is dense and completely solid, so it will sink.
I would say that work is being done in all the situations because technically in physics work is done whenever force is applied through a distance.
Answer: the frequency is every 27.322 days
Answer:
250N
Explanation:
weight = Mass(in kg) × Gravitational field strength
25 × 10 = 250N
