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
bekas [8.4K]
3 years ago
13

A swimming pool is 1.4 m deep and 12 m long. Is it possible for you to dive to the very bottom of the pool so people standing on

the deck at the end of the pool do not see you?
Physics
1 answer:
icang [17]3 years ago
5 0

Answer:

r = 1.59 m

So this is smaller than the length of the swimming pool and hence we can say that diver will not be visible to the person sitting at deck

Explanation:

If the diver is at the bottom of the swimming pool then we will say that the nobody on the deck will able to see if light coming from the diver will have total internal reflection

so we will have

n_1 sin\theta_1 = n_2 sin\theta_2

here we will have

n_1 = \frac{4}{3} for water

n_2 = 1

\theta_2 = 90

now we have

\frac{4}{3}sin\theta_1 = 1

now we have

\theta_1 = 48.6

now let say the radial distance from the position of diver is"r"

so we have

tan\theta = \frac{r}{h}

tan48.6 = \frac{r}{1.4}

r = 1.59 m

So this is smaller than the length of the swimming pool and hence we can say that diver will not be visible to the person sitting at deck

You might be interested in
A car travels 45 km north. It then turns around and travels 30 km south. What is the car's displacement?
natka813 [3]
If the ration supplementary angle is 11:7,find the measure of the larger angle larger angle?
4 0
3 years ago
In the national grid,what does the step up transformer do?
amm1812
In the National Grid, the Step Up Transformer increases the amount of voltage that is passing through the grid at any one time. These are used at power stations, as without them, there would not be enough power to transport the electricity around the national grid.
Hope this helps :) 
7 0
3 years ago
Read 2 more answers
0.0084x91 ...................
Drupady [299]

Answer:

0.0084×91=0.7644

Explanation:

hope this helps

8 0
3 years ago
Read 2 more answers
An engine has an imput of 100 j and gives out 27 j of useful kenetic energy what is the efficiency of the engine
Lunna [17]

Answer:

Based on what we have learned so far, in what ways have the experiences of Asian-Canadians stayed the same over time? Why do you think these similarities exist? Please give specific examples to support your ideas.

Explanation:

4 0
3 years ago
What is the name of a length that is 100 times larger than a millimeter
Pie
<span>The scales is 1 m = 10 dm = 100 cm = 1000 mm. Then 10 dm equals 1000 mm and 1 dm equals 100 mm.The names of the measures in that scale are meter, decimeter, centimeter and milimiter. So, the answer is that the length that is 100 times larger than a milimieter is the decimeter (dm). </span>
4 0
4 years ago
Other questions:
  • Tara's cell phone plan costs $39.00 a month, which includes 100 text messages. After she uses all of her text messages, it will
    11·1 answer
  • Where should an object be placed in front of a concave mirror’s principal axis to form an image that is real, inverted, larger t
    14·2 answers
  • What event triggered the dramatic increase in atmospheric carbon dioxide concentration seen over the last couple of centuries? a
    15·1 answer
  • A solid metal sphere of diameter D is spinning in a gravity-free region of space with an angular velocity of ω. The sphere is sl
    7·1 answer
  • One type of slingshot can be made from a length of rope and a leather pocket for holding the stone. The stone can be thrown by w
    15·1 answer
  • Under specific circumstances, waves will bend around obstacles. This type of bending is called
    5·1 answer
  • a passenger on cruise between San Juan, Puerto Rico and Miami, Florida accidentally drops a souvenir metal cube over the side of
    15·1 answer
  • 8. The mass of the sun is 1.99 x 1030 kilograms and its distance from Earth is 150 million kilometers (150 x 109 meters). What i
    12·1 answer
  • Please explain the function of the 8 organelles listed by using an analogy. Choose ONE topic. A house, a business, an activity,
    15·2 answers
  • similar to the case in the experiment you use two rubber bands, side to side first, to hold a weight of 3 reference objects. the
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!