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
loris [4]
2 years ago
10

When a ray of light is incident normally on an air glass interface what is its angle of refraction​

Physics
1 answer:
DiKsa [7]2 years ago
3 0

Answer:

When a ray of light falls on a glass slab normally, the angle between normal and incident ray is zero.

You might be interested in
PLS HELP 30 POINTS IF U HELP
USPshnik [31]

Answer:

its D so yeah.........

Explanation:

tell me if it's wrong

8 0
2 years ago
Read 2 more answers
Theories and Laws.
Scilla [17]
Laws and theories are similar in that they are both scientific statements that result from a tested hypothesis and are supported by scientific evidence.
6 0
3 years ago
A 1300-N crate rests on the floor. How much work is required to move it at constant speed (a)
kherson [118]

a) The work done is 920 J

b) The work done is 5200 J

Explanation:

a)

In this first part of the problem, the crate is moved horizontally at constant speed.

The work required in this case is given by

W=Fd cos \theta

where

F is the magnitude of the force applied

d is the displacement of the crate

\theta is the angle between the direction of the force and of the displacement

Here the crate is moved at constant speed: this means that the acceleration of the crate is zero, and so according to Newton's second law, the net force on the crate is zero: this means that the force applied, F, must be equal to the force of friction (but in opposite direction), so

F = 230 N

The displacement is

d = 4.0 m

And the angle is \theta=0^{\circ}, since the force is applied horizontally. Therefore, the work done is

W=(230)(4.0)(cos 0^{\circ})=920 J

b)

In this case, the crate is moved vertically. The force that must be applied to lift the crate must be equal to the weight of the crate (in order to move it a constant speed), therefore

F = W = 1300 N

The displacement this time is again

d = 4.0 m

And the angle is \theta=0^{\circ}, since the force is applied vertically, and the crate is moved also vertically. Therefore, the work done on the crate this time is

W=(1300)(4.0)(cos 0^{\circ})=5200 J

Learn more about work:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

4 0
3 years ago
Superman is supposed to leap tall buildings in a single bound. Suppose that he obeys the normal laws of physics in this feat. Es
lys-0071 [83]

Answer:

31.32 m/s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

Let us assume the height of the Disque hall is 50 m

v^2-u^2=2as\\\Rightarrow -u^2=2as-v^2\\\Rightarrow u=\sqrt{v^2-2as}\\\Rightarrow u=\sqrt{0^2-2\times -9.81\times 50}\\\Rightarrow u=31.32\ m/s

In order to make the jump Superman's initial velocity must be greater than or equal to 31.32 m/s

6 0
3 years ago
I NEED THE RIGHT ANSWER ASAP NO LINKS !!!<br> This is a Science question
sdas [7]
3rd number line -5- -4 is -9
also it’s math not physics or science
8 0
2 years ago
Read 2 more answers
Other questions:
  • what is measurement? why is it important to have regular supervision of the weights and measurement in the market?​
    13·1 answer
  • Scientists use specific processes to evaluate information in order to determine its accuracy and reliability. A scientist is con
    5·2 answers
  • What factor determines how long a star lives?
    6·2 answers
  • For a neutral object, how many electrons must transfer to make a net charge of -2?
    12·1 answer
  • If the diameter of each of a car's wheels is 0.4 meters, approximately, what was the average speed of the car for its three-hour
    5·2 answers
  • An oscillator creates periodic waves on a stretched string.
    9·1 answer
  • The equation r (t )=(2t + 4)⋅i + (√ 7 )t⋅ j + 3t ²⋅k the position of a particle in space at time t. Find the angle between the v
    10·1 answer
  • Which statement best describes how resources are distributed? ​
    6·1 answer
  • 10 Select the correct answer. What property of a wave remains unchanged when a wave enters a different medium? O A amplitude OB.
    14·2 answers
  • A generator converts blank energy into blank energy
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!