9. a sailor pulls a boat along a dock using a rope at an angle of 60.0° with the
horizontal. how much work does the sailor do if he exerts a force of 255 n
on the rope and pulls the boat 3.00 m? a girl pulls a wagon along a level path
for a distance of 44 m. the handle of the wagon makes an angle of 22°
above horizontal. if she pulls on the handle with a force of 87 n, how much
work is done?

Ogle–2013–blg–0723 is an exoplanet that is similar to earth in size and proximity to its star. this exoplanet has mass m=4.18×1024kg and radius r=5.66×106m. an astronaut whose weight on earth is w=735n lands on the planet. a. calculate m, the mass of the astronaut. b. calculate gp? , the acceleration due to gravity on the surface of ogle–2013–blg–0723. c. calculate wp? , the weight of the astronaut on the surface of ogle–2013–blg–0723. d. calculate v, the minimum velocity required to put an object into orbit above ogle–2013–blg–0723. e. calculate t, the time required to complete an orbit around ogle–2013–blg–0723.

How would doubling the made of an object change the objects potential energy

You can decrease the resistance of a length of wire by