Arock is thrown from a bridge at an angle 30∘ below horizontal. immediately after the rock is released, is the magnitude of its acceleration greater than, less than, or equal to g?

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

Debris produced by mining is called

Why does the liquid rise up through the dip tube when the valve is open