Question

PLEASE HELP!!!!

Answer 1

@Destinymasha

Answer 2

@Destinymasha, can you please help me?

Answer 3

yup

Answer 4

thank God you came :D LOL

Answer 5

:] whats up?

Answer 6

here's the question:
If you are looking at your reflection in the concave side of a spoon and begin to move the spoon further away from your face, what will you see happening?

You will see yourself upside down and growing larger.
You will see yourself upside down and getting smaller.
You will see yourself right-side up and getting smaller.
You will see yourself right-side up and growing larger.

Answer 7

I thought B?

Answer 8

hmmm.....let me think lol

Answer 9

kk :D

Answer 10

well, i know it diverts/refracts light

Answer 11

please are you sure with this answer? because it'll grade really quick :P

Answer 12

put that you think -- if its not right, its mine

Answer 13

thanks :D I GOT IT RIGHT!

Answer 14

yaya!

Answer 15

oh--i cant find my answer lol

Answer 16

.
Miguel is skipping rocks across the surface of a lake. After he throws it, each stone goes through the following motions:

the stone moves toward the water
the stone hits the surface of the water and bounces off
gravity pulls the stone back toward the water
the stone enters the water and slows down

In which part of the stone's movement is the stone most like a beam of light that is being refracted?

I
III
II
IV

Answer 17

the following motion at the top are also in numerical order... as the multiple choices below...

Answer 18

the stone enters the water and slows down

Answer 19

which is IV, correct? :)

Answer 20

when the rock slows down --i think its gonna refract light --at least that's what I think

Answer 21

yea

Answer 22

I got it right again :D

Answer 23

yay! lol

Answer 24

Which of the following describes the bending of light due to a change in its speed?

transmission
reflection
refraction
absorption

Answer 25

refraction, of course~

Answer 26

I think refration?

Answer 27

correcto!!! Si!!!

Answer 28

The amount of work done to produce a sound determines which property of sound waves?

frequency
amplitude
wavelength
pitch

Answer 29

amplitude?

Answer 30

yes

Answer 31

YAY!!! :)

Answer 32

If you are attending a rock concert and the sound of the guitar is much louder than the singer’s voice, which of the following conclusions would be most reasonable?

The guitar is producing sound waves of a longer wavelength than the singer’s voice.

The singer is producing sound waves of a longer wavelength than the guitar’s strumming.

The singer is producing sound waves of a higher amplitude than the guitar’s strumming.

The guitar is producing sound waves of a higher amplitude than the singer’s voice.

Answer 33

I think D?

Answer 34

i think so too

Answer 35

:) CORRECT!!

Answer 36

If a black car and a white car are left in the Sun, the black car will tend to be hotter. This is because the black car's surface will _______ more light energy than a white car.

absorb
conduct
refract
reflect

Answer 37

absorb?

Answer 38

i think so

Answer 39

:) i'm getting all of them right!!!

Answer 40

Which of the following is a technological application of sound?

a digital camera that records color and intensity of light in a pattern
a microwave that quickly heats up food
a sonogram machine that examines babies before birth
a high definition receiver that provides a very sharp television picture

Answer 41

I think D -cause a receiver is where signals are converted into sounds

Answer 42

that's not the answer..:( the answer was C...

Answer 43

oh no ;/ sorry

Answer 44

it's ok,
Which of the following word pairs correctly completes the sentence below?

Mechanical waves travel faster through _______ than through _______.

a vacuum, air
liquids, solids
air, liquids
solids, liquids

Answer 45

i think this is A?

Answer 46

i was actually thinking D

Answer 47

Sound waves travel faster through a denser medium

Answer 48

thanks :)

Answer 49

wlcm

Answer 50

.
When a wave passes from one medium to a second medium, part of the wave is transmitted into the second medium, and part of the wave is reflected back into the first medium. When a wave splits in this manner, the amplitudes of the transmitted and reflected waves

each decrease at first and then become greater than the amplitude of the original wave.
are each equal to the the amplitude of the original wave.
are each greater than the amplitude of the original wave.
are each less than the amplitude of the original wave.

Answer 51

what do you think?

Answer 52

or maybe i'll tag @wio

Answer 53

just to get a second advice...

Answer 54

Is this a whole test?

Answer 55

nope just practice quiz :)

Answer 56

Looks like wave optics.

Answer 57

what letter choice is that @roadjester?

Answer 58

I meant this quiz in general; it looks like this is a quiz on wave optics.

Answer 59

yep :)

Answer 60

but can you help me?

Answer 61

It's been a while. Let me find my notes.

Answer 62

ok :) *crosses fingers*

Answer 63

Two things come to mind here, interference patterns, and \(\pi\)-phase shift.
I'm going to take a shot in the dark and say amplitude stays the same....sorry.

Answer 64

well you tried your best... thank for trying to help me :)

Answer 65

.
If an object emits or reflects light

it must be the color white.
it cannot be a gas.
it has a smooth surface.
it can be seen by the eye.

Answer 66

You really should post these as new questions.