Answer:
<em>Yes, work has been done on the mud.</em>
<em></em>
Explanation:
Work is done on a body, when a force is applied on the body to move it through a certain distance. In the case of the mud, the tire exerts a centripetal force on the mud. The centripetal force moves the mud along a path that follows the circle formed by the tire in one revolution of the tire. The total distance traveled is the circumference of the circle formed. <em>The work done on the mud is therefore the product of the centripetal force on the mud from the tire, and the circumference of the circle formed by the tire, usually expressed in radian.</em>
Almost true but not quite.
That would give you the negative of the actual acceleration.
It should be the other way around:
(final v) minus (initial v), then divide by time.
Answer:
The correct option is B
Explanation:
The tendency of an object to resist changes in its state of motion varies with mass. Mass is that quantity that is dependent upon the inertia of an object. The more inertia that an object has, the more mass that it has. A more massive object has a greater tendency to resist changes in its state of motion. A common physics demonstration relies on this principle that the more massive the object, the more that object resist changes in its state of motion.
1) The frequency of the sound is
while the speed of sound is
So we can use the relationship between wavelength, speed and frequency of a wave to find the wavelength corresponding to this sound:
2) The wavelength in this case is
while the frequency of the wave is
So we can use the same relationship we used in part 1) to find the speed of the sound wave:
3) The velocity of the wave is
while its wavelength is
therefore we can find its frequency by using the usual relationship: