subject
Physics, 26.04.2021 22:40 jordand7514

Victoria grows the same bacteria in 20 petri dishes. She places 10 of the dishes in a container with a normal atmosphere. The remaining dishes she places in a container in which the oxygen level is double the normal level. She labels the first group "A" and the second group "B." Which statement best describes the groups? A. Group A is the control group; Group B is the experimental group.
B. Group A is the experimental group; Group B is the control group.
C. Group A is the hypothesis; Group B is the theory.
D. Group A is the variable; Group B is the observation.
E. Group A is the theoretical group; Group B is the hypothetical group.

ansver
Answers: 2

Another question on Physics

question
Physics, 21.06.2019 21:30
Write the equation for momentum, first using symbols for the variables, then using words for the variables.
Answers: 2
question
Physics, 21.06.2019 22:30
The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force
Answers: 1
question
Physics, 22.06.2019 03:30
The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared
Answers: 1
question
Physics, 22.06.2019 05:20
Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?
Answers: 1
You know the right answer?
Victoria grows the same bacteria in 20 petri dishes. She places 10 of the dishes in a container with...
Questions
question
Mathematics, 25.02.2021 23:40
question
Mathematics, 25.02.2021 23:40
question
Mathematics, 25.02.2021 23:40
Questions on the website: 13722367