Answer:
option b
Explanation:
the heavier one will have twice the kinetic energy of the lighter one
Answer:
Gas
Explanation:
Cos Milky Said it. Milky Smart.
C. Newton’s Third Law of Motion.
Because...
Newtons third law implies conversation of momentum it can also be seen as following from the second law: when one object pushes a second object at some point of contact using an applied force, there must be an equation of opposite force from the second object that cancels the applied force. Otherwise, there would be a nonzero net force on a massless point which, by the second law, would accelerate the point of contact by an infinite amount.
Then the waves (and the energy they carry) are completely reflected from the surface of the impenetrable medium.
Example:
An ordinary mirror is a sheet of glass with a thin layer of aluminum
or silver stuck to the back of the glass. Light waves have no trouble
traveling through the glass, but they can't get through the silver layer
on the back of it. So the waves completely bounce off of the silver, and
go back through the glass in the direction they came from.
Answer:
<em>The canyon is approximately 314 meters away</em>
Explanation:
<u>Speed of Sound</u>
If we emit sounds in an open space where a large obstacle (like a mountain) is expected to return the sounds, then it will travel forth and back at a given speed for a certain time. We can assume the speed of sound is constant, so we could know the approximate distance of the mountain (or canyon in our case) by the known formula.
Where is the speed of sound and t is half the time we hear our echo.
The speed of sound in m/s can be calculated from the approximate formula in terms of the temperature T in degrees Celsius
We have , so
Let's compute x, for t=1.8/2=0.9 seconds
The canyon is approximately 314 meters away