1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KiRa [710]
3 years ago
11

How can you use energy conversation to predict the speed of the marble from the height?

Physics
1 answer:
Serga [27]3 years ago
3 0
I'm sorry for saying bla bla bla
You might be interested in
8 points)Antireflection coating can be used on the eyeglasses to reduce the reflection of light: a) A 100nm thick coating is app
NemiM [27]

Answer:

- the coating’s index of refraction is 1.25

- the required thickness is 104.1667 nm

Explanation:

Given the data in the question;

Thickness of coating t = 100 nm

wavelength λ = 500nm

we know that refractive index is;

t = λ/4n

make n, the subject of formula

t4n = λ

n = λ / 4t

we substitute

n = 500 / ( 4 × 100 )

n = 500 / 400

n = 1.25

Therefore, the coating’s index of refraction is 1.25

2)

given that;

Index of refraction of the coating; n = 1.20

λ = 500 nm

thickness of coating t = ?

t = λ / 4n

we substitute

t = 500 / ( 4 × 1.2 )

t = 500 / 4.8

t = 104.1667 nm

Therefore, the required thickness is 104.1667 nm

4 0
3 years ago
What is the displacement from a starting position of (14.0, 3.0) m to a final position of (−3.0, −4.0) m?
dem82 [27]

Answer:

change in y = -7

change in x = -17

magnitude of displacement = sqrt(7^2+17^2)

tan of angle below -x axis = 7/17

because in third quadrant where x and y are negative

3 0
3 years ago
20 points please give me correct answer ( brainliest will be reward)
miv72 [106K]

Cause: sewage dumped in rivers,disease spread, and industrial waste dumped into rivers


Effect: fish die off, destroyed habitats, oil spills on land that mixes with run off

Please give brainliest if i helped and good luck!

5 0
3 years ago
Explain why two different elements cannot occupy the same box in the periodic table
bezimeni [28]
They cant occupy the same box in the periodic table because each atom has a certain number of protons which is the atomic number and no two atoms have the same amount of protons.
8 0
3 years ago
A complete path through which charge can flow is an electric what?
grigory [225]
<span>A complete path through which charge can flow is an "Electric Circuit"

Hope this helps!</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • Newton's first law states that an object in motion tends to. An object a rest tends to
    8·1 answer
  • An egg is dropped from a building that is 61 m high.
    8·1 answer
  • A skydiver has a mass of 110 kg. At what speed will she have a momentum
    13·2 answers
  • Our galaxy, the Milky Way, has a diameter of about 100,000 light years. How many years would it take a spacecraft to cross the g
    10·1 answer
  • Comon help me out here
    14·1 answer
  • What is most likely the author’s motive for writing this article?
    9·2 answers
  • What is the force needed to throw a ball 7 meters when 1778 J of work is done?
    6·1 answer
  • If 20N force produces an acceleration of 5ms^-2 In a body then the mass of the body will be:
    8·1 answer
  • An astronaut in space cannot use a conventional means, such as a scale or balance, to determine the mass of an object. But she d
    8·1 answer
  • What are three types of electromagnetic waves that are used to transmit information? What types of devices are used to receive e
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!