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
yawa3891 [41]
3 years ago
15

Help with these questions please?

Physics
1 answer:
egoroff_w [7]3 years ago
8 0

Answer:

5. dispersion

6. 49.8°

Explanation:

5. Dispersion is the name given to the phenomenon of light of different wavelengths being bent differently. A rainbow is the result of light from a point source (the sun) being spread out by wavelength (color), a nice example of dispersion.

___

6. n = 1.31 is the ratio of the sine of the angle of refraction to the sine of the angle of incidence (for light passing to a medium of n = 1). When the angle of refraction is 90°, the angle of incidence is the "critical angle." So, ...

sin(90°)/sin(critical) = 1.31

critical angle = arcsin(1/1.31) ≈ 49.8°

You might be interested in
Formula for percentage error​
GarryVolchara [31]

Answer:

PE = (|accepted value – experimental value| \ accepted value) x 100%

Explanation:

7 0
2 years ago
If two people lift identical stacks of books the same distance and one person does the job twice as fast, which of the following
Doss [256]

Answer:

Power

Explanation:

Power is defined as the rate of doing work with reference to the time spent and the formula is force multiplied by velocity.

In this case, if two people lift identical stacks of books the same distance and one person does the job twice as fast, then it means the velocity in the case is doubled which will also lead to an increase in the Power .

7 0
3 years ago
Which is a more objective measurement, sound intensity or loudness, and why? 1. sound intensity is exactly same as loudness. 2.
fgiga [73]
The correct answer is:
<span>2. sound intensity is a more objective and physical attribute of a sound wave because loudness can vary from person to person

indeed, sound intensity is a measurable quantity, and so it is objective, while loudness is the subjective perception of the sound level, so it varies from person to person.</span>
7 0
3 years ago
Read 2 more answers
How can we describe, model, and explain the material world, and are there limitations?
taurus [48]

Answer:· A model is a description of natural phenomenon that scientists can use to make predictions. A good model is both as accurate as possible and as simple as possible, which makes it not only powerful but also easy to understand. However, no matter how good they are, models will almost always have limitations.

Explanation:

5 0
3 years ago
Material that slows down or resists the flow of current. these are used in electric circuits to help control the flow of current
Nataly_w [17]
It's called an insulator

3 0
3 years ago
Other questions:
  • A crossed-field velocity selector has a magnetic field of magnitude 0.03 T. The mass of the electron is 9.10939 × 10−31 kg. What
    7·1 answer
  • A wire lying along a y axis form y=0 to y=0.25 m carries a current of 2.0 mA in the negative direction of the axis. the wire ful
    6·1 answer
  • A 1.0-kg block moving to the right at speed 3.0 m/s collides with an identical block also moving to the right at a speed 1.0 m/s
    14·1 answer
  • Which phenomenon occurs when a wave encounters a non–transmitting barrier
    12·2 answers
  • Need 3 examples of unbalanced forces
    7·2 answers
  • g The steam above a freshly made cup of instant coffee is really water vapor droplets condensing after evaporating from the hot
    10·2 answers
  • Suppose a miracle car has a 100% efficient engine and burns fuel having an energy content of 40 MJ/L. If the air resistance and
    14·1 answer
  • A 12.3 n force is applied to a 3.65 kg object. Determine the acceleration of the object​
    13·1 answer
  • When a body is accelerated under water, some of the surrounding water is also accelerated. This makes the body appear to have a
    15·1 answer
  • Accelerates uniformly at 2.0 ms2 for 10.0s. Calculate its final velocity​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!