PHYSICS MIDDLE SCHOOL

Under what conditions will light bend?

Answers

Answer 1
Answer: Light refracts or bends when it leaves one medium and enters another one (ex. when it goes from air to water; or when it goes from glass to air). This is because the speed of light is different in different materials (light travels in a vacuum at a speed of 3 x 10^8 m/s and is slower in all other mediums). When light slows down (ex. moves from air into water), the light bends towards the normal; when light speeds up (ex. moves from water into air), the light bends away from the normal. 
Answer 2
Answer: light has a unique property that when it travels from one transparent medium to another transparent medium of different densities it bends and this property is known as refraction
for eg from water to air wherevelocity of light in water is2.25x 10 raised to power 8 m/s and  velocity of light in air is3x10 raised power 8 m/s

Related Questions

I would like to know the answers to both 10 & 11
In DC motor, the split rings are made of A) steel B) copper C) wood D) glass
If a solid is 180g what is the density
What is the main cause of erosion
Why do we see the color black?

Please help me! URGENT!

Answers

A physical change is a change in which no new matters are formed.

Let's get started:
1. a rusting bicycle
This is NOT a physical change because a new substance is formed.
3Fe+ 2O2 -> Fe3O4

2. breaking glass
This is a physical change.

3. melting butter
This is a physical change.
You just change the phase of butter from solid to liquid, but still there is no new substance formed.

4. burning leaves
When you burn something organic, CO2 will be formed.
Therefore, this is NOT a physical change.

5. cutting your hair
This is a physical change.

6. frying an egg
When you fry an egg, iron (Fe) in the yolk reacts with hydrogen sulfide (H2S) in the white to form iron sulfide (FeS).
Therefore, this is NOT a physical change.

7. water evaporating
With the same reason as 3, this is a physical change.

8. mixing salt and water
This is a physical change (with the same reason as 3).
NaCl (s)+ H2O -> NaCl (aq)

Hope this helps~
A physical change only includes changes in state, not the bonds. 

Answer:- 

- breaking glass
- melting butter
- cutting your hair
- water evaporating. 
- mixing salt and water 

I need help with this for physics

Answers

Answer:

V=Volts

I= Amperes

R= Ohms

What is the normal acceleration of a car?

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The normal acceleration in the United States is zero to sixty time. The average rate on ordinary cars was between 3 and 4 m/s2
I went to everybody's favorite search engine to get some data to answer this question with.  I can't name it, but it rhymes with Floogle.  Anyway, I searched for the phrase "zero to 60" just to get an idea of what's hot.

Floogle pointed me to a website that provided this data on fast cars:

#1). 2016 AMZ Grimsel Electric Race Car0-60 mph 1.5 sec

#2). 2014 Porsche 918 Spyder0-60 mph 2.3 sec

#3). 2015 Tesla Model S P90D 'Ludicrous Speed' Upgrade0-60 mph 2.6 sec

And my favorite, because I own one:

#4). 2000 Dodge Intrepid ES   0-60 mph 8.4 sec

Here are the accelerations for the zero-to-60 times listed for these 4 cars:

#1).  17.88 m/s²  (1.82 G's) 
#2).  11.66 m/s²  (1.19 G's)
#3).  10.32 m/s²  (1.05 G's)
#4).    3.19 m/s²  (0.33 of a G)

That's what these "fast cars" will do, on the track,
with their pedals mashed to the metal.

"Normal" accelerations are all less than these.

Plz plz plz plz plz plz hlep me

Answers

Answer:

decantation, distilling, freezing

Explain type of inertia​

Answers

Inertia is the tendency of an object to resist changes in its state of rest or motion. Different types of inertia are: 1. The inertia of Rest: The inability of a body to change by itself its state of rest is called inertia of rest. Example: A person sitting in a car falls backwards when the car starts.

Inertia of Motion: The Inability of a body to change by itself its state of uniform motion is known as Inertia of motion.

Is a brass trumpet a solution

Answers

Absolutely. an allow is a solution of metals. brass is a solution of copper and zinc.
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