Justin expends 600 W of power pushing a car 10 meters in 5 seconds. How much force must he exert A. 750 N

B. 300 N

C. 75 N

D. 30 N

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j

What is the mass of the water that is being heated? it requires 2,500 joules to raise a certain amount of water (c = 4.186 jig c) from 20.0°c to 60.0°c. o 159 o 40 g o 63 g o 80 g