Before railroad were invented, goods often traveled along canals, with mules pulling barges from the bank. if a mule is exerting a 12,000n force for 10km, and the rope connecting the mule to the barge is at a 20 degree angle from the direction of travel, how much work did the mole do on the barge?
a. 12mj
b. 11mj
c. 4.1mj
d. 6mj

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

3. a lunar exploration vehicle was created by a research team. it weighs 3,000 kg on the earth. it needs an acceleration of 10 m/s2 on the moon. in order to have the same acceleration, what will be the net force acting on the vehicle on the earth?