Acar is travelling at a constant speed on a flat road
true or false
-the car is in equilibrium (t/f)
-the car is accelerating (t/f)
-there is a net force on the car (t/f)
-there is work being done on the car (t/f)

What defines the mass number of an isotope? a. the sum of the neutrons and protons b. the sum of the neutrons and electrons c. the number of neutrons d. the number of protons

Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron

Select all the correct answers.which two statements are true? a moving magnetic field creates an electric field.a constant magnetic field creates an electric field.a constant electric field creates a magnetic field.a moving electric field creates a magnetic field.resetnext