Boyle's law states:
pV = C, where p = pressure, V = volume, C = constant.
Therefore,
p1V1 = p2V2
And the,
p2 = p1V1/V2
p1 = 512 kPa
V1 = 5l
p2 =?
V2 = 4l
Therefore,
p2= 512*5/4 = 640 kPa
Answer:
the first answer is correct
<span>The heavier the body is, the stronger
its gravitational pull. Just like earth, we feel gravitational pull because we
are attracted to earth and so is the moon. Also, the sun is heavier than the
earth and therefore, we are attracted to the sun because of its gravitational
pull. When the earth revolves around the sun, both of them releases
gravitational waves. Gravitational waves are ripples of waves travelling
outward from the source. The more massive the orbit of two bodies, the more it
emits gravitational wave. And everything around it that is near within the wave
experiences a ‘pull’ toward the orbiting bodies. The advantages we get when we
can measure gravitational waves are; one, we can measure the activity between
two bodies in orbit in the universe, two, scientist can estimate the merging of
two bodies in the universe every 15 minutes by using LIGO and three, we can
know the behavior of other bodies that we did not know exist.</span>
Answer:
Explanation:
Conservation of momentum is used to solve
Unfortunately we have a missing piece of information such as the initial velocity of the unknown mass train.
If we ASSUME that the second train is at rest
5000(100) + m(0) = 5000(50) + m(50)
which means m = 5000 kg
However, I'll show you the importance of knowing that initial velocity by finding it assuming the other answers are valid
if m = 15000 kg
5000(100) + 15000(v₀) = (5000 + 15000)(50)
v₀ = 33 ⅓ m/s
if m = 10000 kg
5000(100) + 10000(v₀) = (5000 + 10000)(50)
v₀ = 25 m/s
if m = 8000 kg
5000(100) + 8000(v₀) = (5000 + 8000)(50)
v₀ = 18.75 m/s
So you can see why I had to assume an initial velocity. Any of the masses could work if the initial velocity is chosen correctly.
Answer:
After formation, a star uses its fuel and burns brightly; however, upon the consumption of all of its fuel, the star is unable to maintain itself, just as the human body is. This causes the star to either collapse in on itself or burn out completely. Similarly, the life cycle of a human reaches its peak phase after a certain period of maturity and then becomes unable to maintain itself and deteriorates.
Explanation:
