The correct answer is (b.) gets colder. The density of the ocean water increases when the water gets colder. Therefore, it is already concluded that the density of the water and its temperature is indirectly proportional since as the density increases, the temperature decreases.
Mars is the planet that's closest in size to Earth.
Answer: Magnitude of the force exerted on the egg by the ground is 9.2N
Explanation:
Given the following :
Mass of egg (m) = 150g = 0.15kg
Height(h) from which egg is dropped = 3m
velocity of egg before hitting the ground (u) = 4.4m/s
Final velocity of egg (V) = 0
Time taken (t) = 0.072s
Magnitude of the force exerted on the egg by the ground can be found by applying Newton's 2nd law:
Momentum = mass × velocity
From Newton's second law:
Force = mass × change in Velocity with time ;
That is
F = m * ΔV / t
Inputting our values
F = 0.15 * (4.4 - 0) / 0.072
F = 0.15 × (4.4 / 0.072)
F = 0.15 × 61.11
F = 9.16N
F = 9.2N
As kinetic energy increases, substance temperature increases
<u>Answer:</u>
After 3 hours Amanda catch up to Ben.
<u>Explanation:</u>
Speed of Ben = 4 mi/h
Speed of Amanda = 6 mi/h
Time after Amanda starts after Ben leaves = 1.5 hours.
Let the time taken for them to catch up be t hours.
Distance traveled by Ben in time (t+1.5) = 4*(t+1.5)
Distance traveled by Amanda in time t = 6*t
Equating both the distances
4*(t+1.5)= 6*t
2t = 6
t = 3 hours
So after 3 hours Amanda catch up to Ben.