Answer:
As the can heats, the compressed gases will expand, causing the can to explode
Explanation:
We know that the gases in the aerosol can would assume the shape and volume of the can. The volume of the can would be the volume of the compressed gas.
As heat is added to the can, the aerosol gases would gain kinetic energy and their speed would increase. The gases would begin to expand and would require more space in order to move. This would indirectly increase the pressures between gas molecules and the walls of the can as collisions soars.
A point would eventually be reached where the gas agitation would lead to an explosion.
Overheated aerosol cans would explode.
Weightlessness is experienced when there is no net force acting on a body in the vertical direction. Whenever an object is rotating, such as the earth is, it applies an outward centrifugal force on the objects on its surface. At the equator, this force is in the direction exactly opposite to the force attracting us towards the earth, gravity.
If the earth were to spin faster by almost 17 times, the centrifugal force would become equal to the force of gravity and an object would experience weightlessness.
Answer: The answer is D
Explanation: Because the string broke at the direction of B on the car
We don't know. The only way we have to explain it is as the result of
a "Doppler effect", that is, by assuming that the star is approaching us.
But if the Doppler effect is really at work in the cosmos, then the vast
majority of galaxies, along with all of their stars, are receding from us ...
as if space itself and the entire universe were expanding !
That's the current assumption, because no other plausible cause
has been found for the shift of spectra from distant objects. But
nothing in science is ever settled, and the search goes on.
Answer:
Part a)
Part b)
Explanation:
As we know that stone is thrown upwards with speed
Now it returns back to the surface of Earth after t = 6 s
so the displacement of the stone is zero
Part a)
Now we know that the circumference of the planet at the equator is of length
Now we have formula of acceleration due to gravity as
Part b)
Time to complete one revolution around the planet is given as
here we know that
r = distance from center of the planet
now we have
