Answer:
Option A
Explanation:
Water posses hydraulic force and hence it carries off all the particles that lie in its way of flow.
The canyon route have rocks and soil which are first broken down by river velocity and turbulence and then carried away from their base location there by clearing way for the canyon to widen further
Hence, option A is correct
Answer:
Approximate freezing level is at 5350 feet.
Explanation:
We know that the standard lapse rate equals
per 1000 feet
and freezing occurs at a height where the temperature becomes equal to
Thus the standard equation of temperature at any height becomes

The constant 'c' can be obtained by using the boundary condition that at
h=1350 feet temperature equals 

Thus the height at which temperature becomes zero equals

Answer: 48 m
Explanation:
Since we are dealing with constant acceleration, we can use the following equations:
(1)
(2)
Where:
is the cart’s final velocity
is the cart’s initial velocity
is the cart's acceleration
is the time
is the cart's displacement
So, firstly we have to find
from (1):
(3)
(4)
Isolating
from (2) and substituting (4):
(5)
(6)
Finally:
Noise can be measured in decibels.