Answer:
Zero
Explanation:
Since momentum is a product of mass and velocity of an object, in this case when the object stops its final velocity is zero hence despite the magnitude of its mass, multiplied by zero the final momentum is equivalent to zero. However, in case after experiencing momentum its velocity reduces but doesn’t come to a rest, the momentum will have a value. For this question, the first case applies hence momentum value is zero.
Electromagnetic waves don't require a medium to travel.
Answer:

Explanation:
As it is given that flow rate in the pipe is 20 cm^3/s
so we have

at the upper end the area is given as


Also at the other end


now the speed at two ends is given as




now by Bernoulli's theorem we have

now we have

Now we have

Answer:
no the answers r b, d, r, and f
Explanation:
Magnesium and chlorine react to form
A. MgCl2
(magnesium chloride)