On clear day, sunlight delivers approximately 1000 j each second to a 1 m2 surface; smaller areas receive proportionally less--half the area receives half the energy. a 12% efficient solar cell, a square 16 cm on a side, is in bright sunlight. how much electric power does it produce?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n

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?