Answer:
<em>conservation of momentum and energy using a series of swinging spheres</em>
Explanation:
A star is in equilibrium when the pressures inside the star balance out the force of gravity. The pressure is thermal pressure resulting from the fusion reactions taking place in the star's core. A star stays in equilibrium until the supply of hydrogen in the core is depleted.
In a stable star, the gas pressure pushing out from the center is equal with the gravity pulling atoms inward to the center – when these forces are equal, the star is at equilibrium. Once a star reaches equilibrium for the first time, it will start burning (fusing) hydrogen into helium.
Answer:
0.49 cm
Explanation:
We are given that
Mass of water,m=100 g
a.
Volume,
Length of water column in the right arm=
b.
In equilibrium condition
Pressure at point A=Pressure at point B
<span>C. As a metal comb is held near an object with a negative charge, the comb becomes charged.
</span>
Answer:
a = 50 [m/s²]
Explanation:
This type of problem can be solved using Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration.
∑F = m*a
where:
F = force =25 [N] (units of Newtons)
m = mass = 0.5 [kg]
a = acceleration [m/s²]