I'd guess at valve B. more information about the interesting question would help.
Answer:
p(a) * p(b) = .01923
p(b) = .01923 / .07692 = .2500
Answer:

Explanation:
We are asked to find the final velocity of the boat.
We are given the initial velocity, acceleration, and time. Therefore, we will use the following kinematic equation.

The initial velocity is 2.7 meters per second. The acceleration is 0.15 meters per second squared. The time is 12 seconds.
= 2.7 m/s - a= 0.15 m/s²
- t= 12 s
Substitute the values into the formula.

Multiply the numbers in parentheses.




Add.

The final velocity of the boat is <u>4.5 meters per second in the positive direction.</u>
I think it's a) 1st Newton's law... so sorry if it's wrong...
By Boyle's law the volume of the sample decreases, provided temperature is constant.