<span> It is inversely proportional to the square of the distance of the listener from the source
so B is the right option
hope this helps</span>
<span>The moving car has some momentum, but
the stationary truck has none.
Momentum of any object is (mass) times (speed).
If the object isn't moving then it has no speed,
and its momentum is zero, no matter how much
mass it may have.</span>
If time is specified, the distance may be estimated in constant acceleration using the formula: X=(at2)/2 if the beginning velocity is 0. (A automobile begins from a stop...) As a result, X=(6*10*10)/2=600/2 = 300 m.
If the mass of one of the objects is tripled, then the force of gravity between them is tripled. ... Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces.
The velocity of the air relative to the ground is
The velocity of the plane relative to the air is
where is the direction the plane needs to point so that the resultant vector - the velocity of the plane relative to the ground - is
Here is the speed of the plane relative to the ground.
So we have
Use a calculator to solve for and ; you should find