Answer:
<em>The speed of the 8-ball is 2.125 m/s after the collision.</em>
Explanation:
<u>Law Of Conservation Of Linear Momentum</u>
The total momentum of a system of masses is conserved unless an external force is applied. The formula for the momentum of a body with mass m and velocity v is
P=mv
If we have a system of masses, then the total momentum is the sum of them all
If a collision occurs, the velocities change to v' and the final momentum is:
In a system of two masses, the law of conservation of linear momentum takes the form:
The m1=0.16 Kg 8-ball is initially at rest v1=0. It is hit by an m2=0.17 Kg cue ball that was moving at v2=2 m/s.
After the collision, the cue ball remains at rest v2'=0. It's required to find the final speed v1' after the collision.
The last equation is solved for v1':
The speed of the 8-ball is 2.125 m/s after the collision.
Hydrogen's light spectrum is limited to its quanta, so electrons *and photons*, can only travel between the electron orbitals. The light emmited from the sun is almost all the spectrum of light from UV to gamma rays, including the visible spectrum. Thats why there are more lines.
(B) 1.00 m
Explanation:
Since the meter stick is traveling with Jill, it will have the same speed as she does so relative to Jill, the meter stick is stationary so its length remains 1.00 m as measured by her.
Answer:
Explanation:
Option c is incorrect i.e. Entropy of an isolated system must be conserved
The entropy of an isolated system always increases. This can be explained by considering the system is isolated so there is no exchange of mass i.e. entropy cannot decrease so it must either increase or remains constant. But due to the presence of spontaneity in the system, there is always an increase in mass unless the system is undergoing a reversible process in which each state change is in equilibrium condition.
When a candle is burning and
wind is blowing it on one side of the flame, which causes the flame to bend
towards the wind is an example of Bernoulli’s principle. The principle explain
that the higher the speed,
the lower the pressure becomes. When you blow against one side of the flame, you are creating
an area of low pressure. The relatively high-pressure air on the other side of
the candle will rush over to fill the area of low pressure that causes the flame to be
pushed in the direction of the blowing.