Aboat travels north across a river at a velocity of 22 meters /second with respect to the water. the river's velocity is 22
meters /second to the east. what is the resultant velocity of the boat, as measured from the land?

a.242 meters /second northeast
b. 35.5 meters/ second north
c. 221 meters /second northeast
d. 28.7 meters/ second east

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.