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
maxonik [38]
2 years ago
15

I need help with science plz and ty( plz dont give me helpless answer)

Physics
2 answers:
muminat2 years ago
8 0
1. D
2. A
I’m not sure on 3
Ierofanga [76]2 years ago
6 0
1.) D
2.) A
3.) C
i hope this helps!
You might be interested in
A beam of light strikes a sheet of glass at an angle of 56.6° with the normal in air. You observe that red light makes an angle
Yuri [45]

Answer:

(a). Index of refraction are n_{red} = 1.344 & n_{violet} = 1.406

(b). The velocity of red light in the glass v_{red} = 2.23 ×10^{8} \ \frac{m}{s}

The velocity of violet light in the glass v_{violet} =2.13 ×10^{8} \ \frac{m}{s}

Explanation:

We know that

Law of reflection is

n_1 \sin\theta_{1} = n_2 \sin\theta_{2}

Here

\theta_1 = angle of incidence

\theta_2 = angle of refraction

(a). For red light

1 × \sin 56.6 = n_{red} × \sin 38.4

n_{red} = 1.344

For violet light

1 × \sin 56.6 = n_{violet} × \sin 36.4

n_{violet} = 1.406

(b). Index of refraction is given by

n = \frac{c}{v}

n_{red} = 1.344

v_{red} = \frac{c}{n_{red} }

v_{red} = \frac{3(10^{8} )}{1.344}

v_{red} = 2.23 ×10^{8} \ \frac{m}{s}

This is the velocity of red light in the glass.

The velocity of violet light in the glass is given by

v_{violet} = \frac{3(10^{8} )}{1.406}

v_{violet} =2.13 ×10^{8} \ \frac{m}{s}

This is the velocity of violet light in the glass.

8 0
2 years ago
Which statement is true about the technology used to improve the motion of space vehicles on rough surfaces?
Andrei [34K]

The correct answer is C.)

It has made road vehicles safer because magnetometers are used to detect particles found in radiation emitted during combustion of fuel.

h a v e  a  g r e a t  d a y

4 0
3 years ago
Which action would be most likely to reduce the noise level of people talking in a restaurant?
vazorg [7]
B.adding carpet and fabric wall covering to absorb sound
7 0
1 year ago
Read 2 more answers
How does the search for exoplanets help us describe how science requires creativity?
Aliun [14]

Answer:

As the planets are very small and dark in comparison with stars, it makes them very hard to be found from earth.

Explanation:

Astronomy, of course, has a solution for this. As astronomers can't observe planets directly, they decided to observe the stars and search for the effects that planets have on them.

There are many ways of observing the exoplanets: Radial Velocity, Transit Photometry, Microlensing, Astrometry, Direct Imaging, etc.

Before all of this, scientist had to find ways to prove their theories. Most of their time they have spent in giving the creative answers.

Science and creativity are very much connected when we speak about the development of science. Rationality and creativity always go together.

In order to create an idea that other people will consider useful, it is important to use creativity. As no one has the exact answer when it comes to science, the adventure is to research the unknown.

5 0
2 years ago
Muscles that are fatigued ____. A. Are injured , B. Should always be rested , C. Can sometimes be exercised further D. Should be
Lorico [155]

Answer:

<u>B. Should be rested</u>

Explanation:

That is the only reasonable answer.

5 0
2 years ago
Read 2 more answers
Other questions:
  • Which formula can be used to find the x-component of the resultant vector?
    9·1 answer
  • A world-class sprinter running a 100 m dash was clocked at 5.4 m/s 1.0 s after starting running and at 9.8 m/s 1.5 s later. In w
    5·1 answer
  • A cylinder of diameter 100 mm rolls from restdown a 5 m long ramp and its center of mass is moving with velocity 2 m/s at the bo
    5·1 answer
  • Max is gearing up for her lacrosse match. What safety measures can help Max stay safe for the big event?
    10·1 answer
  • During a circus act, one performer swings upside down hanging from a trapeze holding another, also upside-down, performer by the
    8·1 answer
  • How many ternary strings of length 2 n are there in which the zeroes appear only in odd-numbered positions?
    7·1 answer
  • Air passing over an airplane's wing travels ____________________, and therefore exerts ____________________ pressure than air tr
    11·2 answers
  • 4 points
    10·1 answer
  • What material resists the flow of electrons but will allow some electrons to flow?
    14·2 answers
  • On a hot day, the deck of a small ship reaches a temperature of 48
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!