Terms

Question 1

Newton’s first law

Answer 1

every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
The key point here is that if there is no net force acting on an object (if all the external forces cancel each other out) then the object will maintain a constant velocity. If that velocity is zero, then the object remains at rest. If an external force is applied, the velocity will change because of the force.

Question 2

Newton’s second law

Answer 2

explains how the velocity of an object changes when it is subjected to an external force. The law defines a force to be equal to change in momentum (mass times velocity) per change in time.
For an object with a constant mass m, the second law states that the force F is the product of an object’s mass and its acceleration a:
F = m * a

Question 3

Newton’s third law

Answer 3

for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal force on object A.

Question 4

what happens to light as it travels through different mediums?

Answer 4

speed will decrease, wavelength will decrease, frequency will remain constant.
v=f*Lamda

Question 5

what happens to sound as it travels through different mediums

Answer 5

speed of sound travels faster in liquids than in gasses, and in solids than in liquids or gasses. frequency remains constant, so wavelength will increase.

Question 6

for total internal reflection to occur:

Answer 6

1. light must travel from dense medium to less dense one.
2. as angle of incidence increases, so does angle of refraction
3. exit angle greater than incident angle

Question 7

longitudinal wave

Answer 7

a wave vibrating in the direction of propagation

Question 8

standing wave

Answer 8

a vibration of a system in which some particular points remain fixed while others between them vibrate with the maximum amplitude.

Question 9

transverse wave

Answer 9

a wave vibrating at right angles to the direction of its propagation.

Question 10

wavelength/index of refraction relationship

Answer 10

high wavelength, low index of refraction ->bends light the least amount.

Question 11

Converging mirrors

Answer 11

+ focal length, concave

Question 12

converging lenses

Answer 12

+ focal length, convex

Question 13

diverging mirrors

Answer 13

convex, - focal length

Question 14

diverging lenses

Answer 14

• focal length, concave

Question 15

virtual images

Answer 15

are formed by diverging lenses or by placing an object inside the focal length of a converging lens.

Question 16

real images

Answer 16

has to be where the light is, which means in front of a mirror, or behind a lens.

Question 17

inverted image

Answer 17

image distance is +

Question 18

upright image

Answer 18

image distance is -

Question 19

same voltage across when resistors and capacitors are in (parallel or series?)

Answer 19

parallel

Question 20

1 meter stick

Answer 20

100 cm

Question 21

The Law of Reflection

Answer 21

angle of incidence (angle relative to the normal) = angle of reflection