Calculate the change in temperature of 20 kg of water if 30 kg of aluminum is dropped in the water and the aluminum changes temperature by 20°C (Hint: use the principle of conservation of energy.) °C

gravititional force is a force that is acting around you, it is non-contactable and it is a force that pulls you to the core of the earth.

brainliest

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000