Akayaker paddles at 4.0 m/s in a direction 30� south of west. he then turns and paddles at 3.7 m/s in a direction 20� west of south. i know the formulas but having trouble

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present