Sarah wanted to find out if temperature has an effect on the growth of bread mold. she grew the mold in nine petri dishes containing the same amount and type of nutrients. three were kept at 0 c, three were kept at 90 c, and three were kept at room temperature, 27 c. the containers were examined and the growth of the bread mold was recorded each friday for five weeks. the independent or manipulated variable . temperature of the containers b. number of containers at each temperature c. growth of bread mold d. amount of nutrients in each container

Amplitude is a measure of a waves a; speed b; distance c; energy d; frequency

Two vectors are shown. which statement best compares the vectors? vector x has greater magnitude than vector y. vector y has greater magnitude than vector x. the vectors have the same displacement. the vectors have the same direction.

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)