Question

1. A student studying a circuit diagram of a lightbulb, battery, and a switch correctly identifies it as a closer circuit. In this diagram, The lightbulb would be
a. an insulator
b. on***
c. disconnected
d. off

2. The focus of gravity on an object on the surface of Mars is less than the force of gravity on an identical object on the surface of earth. Which of the following is a example why this is true?
a. Mars has more volume than earth
b. Earth has more volume then mars
c. Mars has less mass than earth***
d. Earth has less mass then mars

Answer 1

I guess if the switch is closed the bulb is on.

yes G M/r^2

but we are assuming comparable radii

Answer 2

actually you are right XD