16/07/2021 23 Question 9 of 10
HOMEWORK
Which movement will require the greatest amount of work to be
done?

This activity is
a force of 10N moving an object a distance of 3.0 m
B*
ASSESSMENT
Percentage
a force of 10N moving an object a distance of 5.0m
a force of 15N moving an object a distance of 3.0m
C ATTEMPTS
a force of 15N moving an object a distance of 5.0m

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius