Answer:
the light will reflect parallel to the principal axis
The mass of lead = 22,939 kg
<h3>Further explanation</h3>
Given
mass alcohol=1600 kg
The density of lead =11300kg\m³ and density of alcohol=790kg\m³
Required
mass of lead
Solution

the volume of lead=volume of alcohol=2.03 m, so the mass of lead :

C should be the right answer! hopefully this helps!
Power is defined as the amount of work over a certain amount of time. Work is also Force times the distance traveled. Simplifying the expression makes it Power=Force x Velocity. Since we are given that the power is 4500 W and the force is 100 N, dividing the Power by force gives 45 m/s, which is the velocity of the ball.