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
mario62 [17]
2 years ago
15

What is flens, the focal length of the lens? if the lens is converging flens is positive. it the lens is diverging, flens is neg

ative?
Physics
1 answer:
nexus9112 [7]2 years ago
5 0
The question given seems to be incomplete, however (f) refers to the focal point at which the image is standing in order for it to be mirrored by a converging or a diverging lens. The statement above is correct that converging lens create positive focal images, and diverging lenses create negative focal images.
You might be interested in
If the force that propels the cannonball forward is 500N, how much force will move the cannon backward?
Licemer1 [7]

Answer:

Well it would be equal to 500N because pushing forward the ball (or whatever maybe a body) would push the canon back an even 500N backwards...

Explanation:

6 0
3 years ago
What did the scientists deduce from the fact that the ants eyes of the desert have multiple lenses
Evgesh-ka [11]
That the pupl is smaller than the nulian hope this helped

4 0
3 years ago
An AM radio station broadcasts isotropically (equally in all directions) with an average power of 3.40 kW. A receiving antenna 6
lara [203]

To solve the problem we will apply the concepts related to the Intensity as a function of the power and the area, as well as the electric field as a function of the current, the speed of light and the permeability in free space, as shown below.

The intensity of the wave at the receiver is

I = \frac{P_{avg}}{A}

I = \frac{P_{avg}}{4\pi r^2}

I = \frac{3.4*10^3}{4\pi(4*1609.34)^2} \rightarrow 1mile = 1609.3m

I = 6.529*10^{-6}W/m^2

The amplitude of electric field at the receiver is

I = \frac{E_{max}^2}{2\mu_0 c}

E_{max}= \sqrt{2I\mu_0 c}

The amplitude of induced emf by this signal between the ends of the receiving antenna is

\epsilon_{max} = E_{max} d

\epsilon_{max} = \sqrt{2I \mu_0 cd}

Here,

I = Current

\mu_0 = Permeability at free space

c = Light speed

d = Distance

Replacing,

\epsilon_{max} = \sqrt{2(6.529*10^{-6})(4\pi*10^{-7})(3*10^{8})(60.0*10^{-2})}

\epsilon_{max} = 0.05434V

Thus, the amplitude of induced emf by this signal between the ends of the receiving antenna is 0.0543V

6 0
3 years ago
In the example of jumping off a chair, what is the impulse that will stop your fall?
liq [111]

Answer:

You will reach both your arms out to break your fall and save your head.

Explanation:

It common sense you don't want your head injured. Do you?

5 0
3 years ago
what happens to light when it falls upon a material that has a natural frequency equal to the frequency of the light?
mixas84 [53]

The energy from the light is transferred to the material, causing it to vibrate and absorb the light.

What is energy?
In physics, energy is the quantitative quality that is transmitted to the a body or a physical system, and is discernible in the work performed as well as in the form of light and heat. The law of conservation states that although energy can change its form, it cannot be created or destroyed. Energy is indeed a conserved quantity. The International System of Units' (SI's) joule is the measurement unit for energy (J). A moving object's kinetic energy, a solid object's elastic energy, chemical energy caused by chemical reactions, and the potential energy that an object stores (for instance because of its position inside a field) are examples of common forms of energy.

When light falls upon a material that has a natural frequency equal to the frequency of the light, the light will be absorbed by the material. This is due to resonance, which occurs when the frequency of the light matches the natural frequency of the material. The energy from the light is transferred to the material, causing it to vibrate and absorb the light.

To learn more about energy
brainly.com/question/582060
#SPJ4

7 0
1 year ago
Other questions:
  • If gravity is the only force acting on you, why<br> aren't you moving down right now?
    15·2 answers
  • Help with 2 Physics questions, WILL CHOOSE BRAINLIEST
    9·1 answer
  • What is the safest way to vent building with backdraft potential
    6·1 answer
  • By what mechanism is a person injured when he or she falls from a significant height? Select one: a. Kinetic energy is converted
    7·1 answer
  • Suppose that the speed of a ball moving in a horizontal circle is increasing at a steady rate. Is this increase in speed produce
    15·2 answers
  • Match the following terms.
    7·1 answer
  • What is it known as when a force is applied to an object for an amount of time?
    11·2 answers
  • A 5.20-N force is applied to a 1.05-kg object to accelerate it rightwards. The object encounters 3.29-N of friction. Determine t
    9·1 answer
  • what specific heat of water explains why the climate doesn't vary much with season in places near large body water​
    7·1 answer
  • An iceberg of density 920kg/m^3 floats in seawater of density 1025kg/m^3 with volume of 10^6m^3.What is the total mass of the ic
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!