I think false but I could be wrong I’m sorry
Answer: positive
Explanation:
Gravity can be defined as the force with which the body is attracted towards the center of the earth, or towards any other body. If the force acting on the body is in the direction of displacement then the word done by the applicable force is positive. This causes the free fall of the ball under the influence of gravity is also positive.
Answer:
36°C
Explanation:
Heat gained by the cold water = heat lost by the warm water
mCΔT = mCΔT
(1000 g) (4.184 J/g/K) (T − 20°C) = (4000 g) (4.184 J/g/K) (40°C − T)
1000 (T − 20°C) = 4000 (40°C − T)
T − 20°C = 4 (40°C − T)
T − 20°C = 160°C − 4T
5T = 180°C
T = 36°C
