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
Lena [83]
2 years ago
11

Explain the working and principle of perisocope.​

Physics
1 answer:
aksik [14]2 years ago
6 0

Answer:

a periscope use total internal reflection to allow us to see things

the reflection happens at 45°

Explanation:

You might be interested in
Aliya deposited half as much money in a savings account earning 1.9% simple interest as she invested in a money market account t
yanalaym [24]

Let <em>A</em> be the amount of money that Aliya deposited in the savings account. Since <em>A</em> is half as much as money as she invested in a money market account, then the amount that she invested in the market account is <em>2A.</em>

<em />

Express the interest that Aliya earned in terms of A. Set it equal to the amount of $297.60 and then solve for <em>A</em>.

Since the savings account gives 1.9% simple interest, the total amount of interest that she will earn from the savings account is 1.9% of A, which is equal to:

\frac{1.9}{100}\times A

Since the money market account gives 3.7% simple interest, the total amount of interest that she will earn from the money market account, is 3.7% of <em>2A</em>, which is equal to:

\frac{3.7}{100}\times2A

Add both interests in terms of A and simplify the expression:

\begin{gathered} \frac{1.9}{100}\times A+\frac{3.7}{100}\times2A \\ =\frac{1.9}{100}\times A+\frac{7.4}{100}\times A \\ =(\frac{1.9}{100}+\frac{7.4}{100})\times A \\ =\frac{1.9+7.4}{100}\times A \\ =\frac{9.3}{100}\times A \end{gathered}

The expression (9.3/100)*A represents the total interest after one year. Then:

\begin{gathered} \frac{9.3}{100}\times A=297.60 \\ \Rightarrow A=\frac{100}{9.3}\times297.60 \\ \Rightarrow A=\frac{100\times297.60}{9.3} \\ \Rightarrow A=\frac{29760}{9.3} \\ \Rightarrow A=3200 \end{gathered}

Use the value of <em>A</em> to find the amount that was invested in the money market account:

2A=2\times3200=6400

Therefore, Aliya deposited 3200 in a savings account and 6400 in a money market account.

3 0
1 year ago
Which of the following is the flow of electrons through a wire or a conductor
Hatshy [7]
Wires or silver and copper
8 0
3 years ago
3.25 kcal is the same amount of energy as
PIT_PIT [208]
<span>1 cal = 4,185 J
1 kcal = 1*10^3 cal
or
=1000 cal</span>
8 0
3 years ago
Read 2 more answers
A nail is hit with a hammer. Which type of contact force has been applied?
kotegsom [21]
D or b you chose because it can go any way
8 0
3 years ago
A ball is dropped out of a window and hits the ground at 14.5 m/s. How long did it take to fall to the ground?
Lerok [7]

Answer:

Explanation:

Use the one-dimensional equation:

v_f=v_0+at which says that the final velocity of a falling object is equal to its initial velocity times the acceleration of gravity times the time it takes to fall. We have the final velocity, -14.5 (negative because its direction is down and down is negative), initial velocity is 0 (because it was held still by someone before it was dropped), and acceleration is -9.8 (negative again, because direction is down while acceleration increases). Filling in:

-14.5 = 0 - 9.8t and

-14.5 = -9.8t so

t = 1.5 seconds

3 0
3 years ago
Other questions:
  • If you wanted to learn more about ancient scientific knowledge, whose life<br> would you research?
    11·2 answers
  • 8. A car travels from Town A to Town B on one road at different speeds and stops at red lights. If you know the distance between
    14·1 answer
  • A capacitor is connected to an ac generator that has a frequency of 2.3 kHz and produces a rms voltage of 1.5 V. The rms current
    14·1 answer
  • What is the most advanced degree commonly held by Business, Management, and Administration workers? associate degree bachelor’s
    6·2 answers
  • An electric dipole generates an electric field in the space around it what do all of the electric field lines have in common?
    15·1 answer
  • What is necessary for fossil fuels to form? oxygen forming continuously for a long period of time sunlight shining continuously
    9·2 answers
  • The amplitude of a wave is
    10·1 answer
  • 4. An airplane normally flies at 240 km/hr. If it experiences a 80 km/hr tailwind
    5·1 answer
  • How this induced force can be increased? Write three ways.
    12·1 answer
  • A Person is carrying 6kg in one hand and 5kg in another.Calculate the resultant force applied by him​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!