Which statement best describes scientific laws?
a) they are the result of testing theories and proving them to be facts
b) they interpret and explain natural events
c) they describe phenomenon that can be observed in nature
d) they explain scientists opinions of why events occur

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

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

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.