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
olga_2 [115]
2 years ago
8

Which of these instruments is listed with the wrong type of lens that it uses?

Physics
1 answer:
VikaD [51]2 years ago
3 0

The wrong type of lens-Microscope, concave

Explanation:

A microscope Basically  uses t<u>wo convex lenses to magnify an object, or specimen.</u>

There are  2 lenses in a microscope

  1. <u>Object Lens:</u>The lens that is closer to the object
  2. <u>Eyepiece:</u>The lens that is closer to the eye

Both the object lens and the  eyepiece, is a convex lens.

You might be interested in
The tape in a videotape cassette has a total
Softa [21]

Answer:

1.37 rad/s

Explanation:

Given:

Total length of the tape is, d= 297 m

Total time of run is, t = 2.1 hours

We know, 1 hour = 3600 s

So, 2.1 hours = 2.1 × 3600 = 7560 s

So, total time of run is, t= 7560 s

Inner radius is, r = 10\ mm = 0.01\ m&#10;

Outer radius is, R = 47\ mm = 0.047\ m&#10;

Now, linear speed of the tape is, v =\frac{d}{t}=\frac{297}{7560}=0.039\ m/s&#10;

Let the same angular speed be \omega.

Now, average radius of the reel is given as the sum of the two radii divided by 2.

So, average radius is, R_{avg}=\frac{R+r}{2}=\frac{0.047+0.01}{2}=\frac{0.057}{2}=0.0285\ m&#10;

Now, common angular speed is given as the ratio of linear speed and average radius of the tape. So,

\omega=\dfrac{v}{R_{avg}}\\\\\\\omega=\dfrac{0.039}{0.0285}\\\\\\\omega=1.37\ rad/s&#10;

Therefore, the common angular speed of the reels is 1.37 rad/s.

5 0
3 years ago
2. The components of vector A are given as follows:
Stella [2.4K]

Answer:

50 degree.

Explanation:

Given that the components of vector A are given as follows: Ax = 5.6 Ay = -4.7

The angle between vector A and B in the positive direction of x-axis will be achieved by using the formula:

Tan Ø = Ay/Ax

Substitute Ay and Ax into the formula above.

Tan Ø = -4.7 / 5.6

Tan Ø = -0.839

Ø = tan^-1(-0. 839)

Ø = - 40 degree

Therefore, the angle between vector A and B positive direction of x-axis will be

90 - 40 = 50 degree.

3 0
2 years ago
What are two things that determine our traits? If someone could answer asap, that would be awesome!
zepelin [54]
In thinking about inherited traits, geneticists use two important words: genotype and phenotype. Genotype refers to the genes an organism inherits from its parents and phenotype refers to the observable characteristics of an organism: how it develops, looks, reacts and behaves. An inherited trait refers to a phenotypic characteristic, for example flower color, length of gestation or ability to metabolize cellulose. All traits have a genetic basis.
5 0
3 years ago
Read 2 more answers
How much time will it take to do 33j of work with 11 w of power
Yuri [45]

Time required : 3 s

<h3>Further explanation </h3>

Power is the work done/second.

\tt P=\dfrac{W}{t}\\\\P=power,j/s,watt\\\\W=work, J\\\\t=times=s

 

To do 33 J of work with 11 W of power

P = 11 W

W = 33 J

\tt t=\dfrac{W}{P}\\\\t=\dfrac{33}{11}\\\\t=\boxed{\bold{3~s}}

8 0
3 years ago
Describe the differences among ultraviolet waves, visible light waves, and infrared waves. how are these waves alike?
sergeinik [125]
Our eyes are detectors which are designed to detect visible light waves (or visible radiation). ... The electromagnetic spectrum includes gamma rays, X-rays, ultraviolet, visible, infrared, microwaves, and radio waves. The only difference between these different types of radiation is their wavelength or frequency.
4 0
3 years ago
Other questions:
  • What is released when an excited electron returns to a lower energy state?
    6·2 answers
  • The rotational analogue of force is moment of force, also called torque.
    7·1 answer
  • At a certain instant the current flowing through a 5.0-H inductor is 3.0 A. If the energy in the inductor at this instant is inc
    15·1 answer
  • A gas bottle contains 0.250 mol of gas at 730 mm hg pressure. if the final pressure is 1.15 atm, how many moles of gas were adde
    15·1 answer
  • Two car horns are sounded creating two sound waves with frequencies that differ by a factor of three. How does the speed of the
    10·1 answer
  • what happens to the strength of an electromagnet when the number of coils in the solenoid is decreased?
    15·2 answers
  • Physicists at CERN study the conditions present during the big bang by using machines to do what?
    9·1 answer
  • Please help me-. it’s part of my major grade.
    7·2 answers
  • Relative to a stationary observer, a moving clock Group of answer choices can do any of the above. It depends on the relative en
    6·1 answer
  • RADIOWAVES of constant amplitude can be generated with
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!