An athlete at the gym holds a 1.5 kg steel ball in his hand. His arm is 70 cm long and has a mass of 4.0 kg .

a. What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
b. What is the magnitude of the torque about his shoulder if he holds his arm straight, but 60 ∘ below horizontal?

What happens to the light rays when they hit the specimen?

(science)study the following ocean currents map. an ocean currents map is shown. on the map the locations for san diego, california and savannah, georgia are marked. there is a looping current from the north past san diego and a looping current from the south near savannah which statement is most likely correct about the average temperatures in san diego, california as compared to savannah, georgia? it is higher in savannah because of the cool ocean currents from the south. it is higher in savannah because of the warm ocean currents from the north. it is lower in san diego because of the warm ocean currents from the south. it is lower in san diego because of the cool ocean currents from the north.

What are the factors that affect the resistance of a wire?