Answer:
Explanation:
pressure due to fluid column = hdg where h is height of column , d is density of fluid , g is acceleration due to gravity .
Total pressure on the diver = atmospheric pressure + pressure due to water
= .70 x 13600 x 10 + 15 x 1050 x 10
= 95200 + 157500
= 252700 Pa
= 2.527 x 10⁵ Pa .
Answer:
1.439 × 10¹¹ m is the answer.
Explanation:
1 light-second = 2.998 × 10⁸m
480 light-seconds = 480 × 2.998 × 10⁸
= 1439.04 × 10⁸
= 1.439 × 10¹¹
∴ 1.439 × 10¹¹ m is the answer.
Note that by the law of inertia, it's the nature of objects to continually be in motion. For something to be still, there has to be a presence of a force.
They mention "no outside forces" so you know that a kid isn't kicking the object or a train is hitting it, or anything like that. Still, there are internal forces working, and I drew it out for you :) Hope this helps!