A70.-kilogram cyclist develops 210 watts of
power while pedaling at a constant velocity of
7.0 meters per second east. what average force is
exerted eastward on the bicycle to maintain this
constant speed?
(1) 490 n (3) 3.0 n
(2) 30. n (4) 0 n

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.