A line that is falling towards the x axis represents an object that is negatively accelerating, or slowing down. When the line hits the x axis, the object has stopped moving. If the graph continues below the x axis, the object has changed direction and is moving backwards at increasing velocity.
Answer:
Without any external forces a moving object will continue to move in a straight line. The gravitational force between the two objects will provide the centripetal force to keep the objects moving around one another.
1. satellite in orbit around the earth (motion of earth is negligible)
2. moon in orbit around the earth (center of motion several thousand miles
from center of earth)
3. earth in orbit around sun (center of rotation close to center of sun)
4. binary stars (if masses of stars are equal center of rotation is in middle)
Answer:
it looks like light hits ballon and the bollon pops maby pop prosos
The beat frequency (4 beat per second = 4 Hz ) corresponds to the difference between the frequencies of the two waves:
(1)
The frequency of the first wave can be written as
where v is the speed of sound in the gas and
is the wavelength of the first wave, while the frequency of the second wave is
where
is the wavelength of the second wave. If we substitute into the first equation (1), we find
and if we re-arrange it, we can find the velocity of the sound in the gas:
Explanation:
Below is an attachment containing the solution.