A real cubic expansivity is an increase in the volume of a liquid per unit volume per degree rise in temperature when heated in an inexpansible vessel.
Answer:
B) the change in momentum
Explanation:
Impulse is defined as the product between the force exerted on an object (F) and the contact time (
)

Using Newton's second law (F = ma), we can rewrite the force as product of mass (m) and acceleration (a):

However, the acceleration is the ratio between the change in velocity (
) and the contact time (
):
, so the previous equation becomes

And by simplifying
,

which corresponds to the change in momentum of the object.
You first subtract the speed at which the man is moving (11 m/s) from the rate the boat is moving (12.4 m/s). Which equals 1.4, then divide it by 6 meters, as the man is moving relative to the boat.
It therefore equals 4.29 s
Answer: 3000 Newton
Explanation:
Mass of large car = 1000 kg.
Acceleration of the car = 3 m/sec2
Force = ?
Recall that force is the product of mass of an object and the acceleration by which it moves.
Thus, Force = Mass x Acceleration
Force = 1000 kg x 3 m/sec2
= 3000 Newton
Thus, 3000 Newton of force would be required to accelerate the car