Answer:
Explanation:
On Earth the atmospheric presure is . This will be the pressure inside the lander. Outside, the pressure on Mars will be . This means that the net force will be outward (since inside the pressure is higher) and, since the area of the hatch is , of value:
Since 1lb in weight is equal to 4.45N, we can write:
Answer: False
Explanation: Cuz its False, and its false, this message was approved by False.
Answer:
Velocity = v = 35 m/s
Explanation:
Kinetic energy of an object is defined as the energy possess by an object due to its motion. Kinetic energy K.E of an object is equal to the half of the mass of that object multiplied by square of the object's velocity.
Mathematically,
v = 35 m/s
Answer:
The speed is 13 m/s
Explanation:
In this problem, we have two reference frames:
- The reference frame of the observer on the ground, O
- The reference frame of the observes on the train, O', moving with velocity with respect to O (here we have taken north as positive direction, so since the train is moving south, we wrote it as a negative number)
For the observer on the ground, O, Sydney is moving with velocity
(positive because it's moving north)
So, we can find Sydney's velocity with respect to the frame O' as follows
So, the camera crew on the train observe Sydney moving at 13 m/s north