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
Gnom [1K]
3 years ago
6

A point source of light is located at the bottom of a steel tank, and an opaque circular card of radius is placed horizontally o

ver it. A transparent fluid is gently added to the tank so that the card floats on the fluid surface with its center directly above the light source. No light is seen by an observer above the surface until the fluid is deep. What is the index of refraction of the fluid
Physics
1 answer:
pochemuha3 years ago
3 0
Start by using the addition as a sign and use multiplying
You might be interested in
A girl moves quickly to the center of a spinning merry-go-round, traveling along the radius of the merry-go-round. Which of the
DochEvi [55]

Answer:

The angular speed of the system increases.

The moment of inertia of the system decreases.

Explanation:

As we know that the girl is going towards the center of the circle so here the moment of inertia of the girl is given as

I = mr^2

here we know that

r = position of the girl from the center of the disc

now we know that the girl is moving towards the center so its distance will continuously decreasing

So the moment of inertia of the girl will decrease

Now we know that that with respect to the center of the disc there is no torque on the disc + girl system

So here we can use angular momentum conservation

So we have

I\omega = constant

since moment of inertia is decreasing for the system

so angular speed will increase

3 0
3 years ago
What is the average speed of a kangaroo that hops 60 m in 5 s ?
jok3333 [9.3K]
The formula for average speed is
v_{avg}= \frac{total distance}{total time}
So we can just substitute our data.
v_{avg}= \frac{60}{5}=12 \frac{m}{s} - its the result
6 0
2 years ago
Read 2 more answers
What is the source of all wave motion
Marina86 [1]

Answer:

The source of all wave motion is a disturbance in matter or a vibration

7 0
3 years ago
Read 2 more answers
How is a badminton game won
andrew-mc [135]
Whoever scores the highest
8 0
3 years ago
Read 2 more answers
Question 3 of 10
Ahat [919]

Answer:

The unit of power is pascal.

3 0
2 years ago
Other questions:
  • Would a sound wave travel faster in a bedroom or a pool and why?
    14·2 answers
  • A black hole is a ________
    10·1 answer
  • What is matter? Give a grade 10/11/12 understanding.
    14·1 answer
  • An unbalanced force of 15 N is applied to a 13 kg mass. What is the acceleration of the mass?
    7·1 answer
  • _______ force is the force that keeps an object moving on a curved path that is directed inward towards the center of a rotation
    12·1 answer
  • A scientist is designing a device that will mimic Earth's atmosphere by
    15·1 answer
  • The aorta carries blood away from the heart at a speed of about 42 cm/s and has a diameter of approximately 1.1 cm. The aorta br
    8·1 answer
  • An accelerometer has a damping ratio of 0.5 and a natural frequency of 18,000 Hz. It is used to sense the relative displacement
    13·1 answer
  • Infer why the doppler effect can or can not occur in all waves.
    7·1 answer
  • 1. Space probes have not landed on Pluto yet. Describe three types of information you would collect if you were designing the pr
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!