g≈10 m/s²
F=G=mg=65*10=650 N
L=F*h=650*7=4550 J
P=L/t=>t=L/P=4550/300=15.16 s
The answer is binary star system
I beleive she isnt doing any work due to holding the box motionless, you must be exerting a force in the direction of the box motion. If she is just standing there holding the box their isn't no work becuase no distance has been covered. work = force = distance.
Answer:
Force arrows are used by scientists and engineers to predict the motion of an object based on the forces that are applied to it.
The zeroth law of thermodynamics states that if two thermodynamic systems each are in thermal equilibrium with a third, then they are in thermal equilibrium with each other.