What is the difference in gravitation potential energy when a 3.5 of box is raised from a height of 1.2m to a height of 4.0m?

96.138 J

Explanation:

Use equation for potential gravitational energy : Ep=mGh

Ep1=mGh1

Ep2=mGh2

Ep1= 3.5*9.81*1.2

Ep1=41.202 J

Ep2=3.5*9.81*4

Ep2=137.34 J

Ep=Ep2-Ep1

Ep=137.34-41.202

Ep= 96.138 J

neither accurate nor precise.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min