At the gym a woman a Lifts 40 kg of weight on the leg press. It takes her a 0.5 seconds to raise the weights a vertical distance of 0.4 m. How much power does the woman generate when lifting the weights? 180 W
205 W
314 W
502 W

If steel is more dense that lake water, why can a boat float

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?

To a of 4 x hz is 1. 0. mm nm nm