A bar magnet was placed underneath a sheet of paper where a pile of iron filings sits. In the presence of the energy stored in t
1 answer:
You might be interested in
The astronaut final velocity is 0.06 m/s to the right
Explanation:
In absence of external forces, the total momentum of the box-astronaut system is conserved.
At the beginnig, the total momentum of the two is zero, since they are at rest:
While the final momentum, after the astronaut throws the box, is:
where
m = 11 kg is the mass of the box
M = 79 kg is the mass of the astronaut
v = -0.45 m/s (to the left) is the velocity of the box (we take left as negative direction)
V is the final velocity of the astronaut
The total momentum is conserved, so
And solving , we find V:
And the positive sign indicates that the direction is to the right.
Learn more about momentum:
#LearnwithBrainly
Answer:
The angle from the vertical is 48.72°
Explanation:
Given :
Length of rope m
Mass of man Kg
Mass of car Kg
Velocity of car
According to conservation law,
Potential energy of man is converted to kinetic energy of car moving,
We calculate height,
( ∵
)
m
This is the distance of the rope at the bottom,
So we take difference of it.
⇒
We can calculate angle between them,
48.72°
Therefore, the angle from the vertical is 48.72°