A machine has 800 J of input work and 200 J of output work. What is the machine's efficiency? A 2%

B 25%

C 40%

D 1000%

This question is worth 54 points ! rock falls from a ledge to the ground what energy conversion occurs during this process a potential to kinetic b kinetic to potential c thermal to mechanical d chemical to mechanical

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.

How to tell if a molecule is polar or nonpolar with electronegativity