Which layer of earth has the lowest temperature is entirely solid and floats on top of fluid like matter

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

If forces acting on an object are unbalanced. true or false

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward