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
I guess if the switch is closed the bulb is on.
yes G M/r^2
but we are assuming comparable radii
actually you are right XD
1. The answer is b. on. In a closed circuit, the electrical current flows continuously, causing the lightbulb to turn on.
2. The answer is c. Mars has less mass than earth. The force of gravity on an object depends on the mass of the object and the distance between the object and the center of mass of the planet. Since Mars has less mass than Earth, the force 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.
1. The correct answer is b. on. The student correctly identifies the circuit as a "closed circuit," which means that there is a complete path for the electric current to flow. In a closed circuit, the switch is usually in the "on" position, allowing the current to flow through the lightbulb and light it up.
To determine the answer, the student would have observed that the circuit is complete, with a closed loop from the battery, through the switch, through the lightbulb, and back to the battery. When the switch is closed (turned "on"), the current can flow through the circuit, and the lightbulb will illuminate.
2. The correct answer is c. Mars has less mass than Earth. Gravity depends on the mass of an object, so an object on Mars will experience less gravitational force compared to an identical object on Earth. This is because Mars has less mass than Earth overall.
To determine the answer, the student would have considered the fact that gravity is directly proportional to the mass of an object. In the given scenario, two identical objects are being compared, so the difference in force of gravity can be attributed to the difference in mass between Mars and Earth. Since Mars has less mass, it exerts less gravitational force on objects on its surface.