Answer:
A bowling ball
Explanation:
We know that the gravitational force acting on an object is given by:
Where
r is the distance between two masses
Also the force of gravity is equal to the weight of an object. It is given by:
W = mg
g is the acceleration due to gravity that varies with location.
It is clear that the gravitational force depends on the mass of an object. Out of given options a bowling ball has maximum mass. So, it will possess maximum gravitational force. Hence, the correct option is (c).
Answer:
Amplitude is decreased by a factor of if intensity is decreased by a factor of 3.
Explanation:
Intensity of a sound wave is directly proportional to the square of its amplitude.
Therefore, if intensity is and amplitude is
, then
, where,
is constant of proportionality.
Now, if intensity of sound wave is decreased by a factor of 3. So,
New intensity is,
Plug in for
. This gives,
Therefore, amplitude is decreased by a factor of .