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
adelina 88 [10]
3 years ago
12

The largest aperture telescopes are reflectors because they require a _____ focal length.

Physics
1 answer:
Stells [14]3 years ago
5 0
The largest aperture telescopes are reflectors because they require a shorter focal length. I think that is the answer! I hope that it helps!
You might be interested in
Which best explains why magnets can push on or pull other magnets without touching them?
V125BC [204]
Magnetism is a property of materials that respond at an atomic or subatomic level to an applied magnetic field. For example, the most well known form of magnetism is ferromagnetism such that some ferromagnetic materials produce their own persistent magnetic field. However, all materials are influenced to greater or lesser degree by the presence of a magnetic field. Some are attracted to a magnetic field (paramagnetism); others are repulsed by a magnetic field (diamagnetism); others have a much more complex relationship with an applied magnetic field. Substances that are negligibly affected by magnetic fields are known as non-magnetic substances. They include copper, aluminium, gases, and plastic. 

<span>The magnetic state (or phase) of a material depends on temperature (and other variables such as pressure and applied magnetic field) so that a material may exhibit more than one form of magnetism depending on its temperature, etc.
Or
 </span><span>If it's a multiple choice question this is the best answer: </span>
<span>A magnetic field surrounds each magnet, which affects other objects with magnetic fields
</span><span>hope this helpsss.
and can you help me as well with two questions if you dont mind


</span>
5 0
4 years ago
A laser with a power of 1.0 mW has a beam radius of 1.0 mm. What is the peak value of the electric field in that beam
Fynjy0 [20]

Answer:

The peak value of the electric field is 489.64 V/m

Explanation:

Given;

power of the laser, P = 1.0 mW = 1 x 10⁻³ W

Radius of the beam, R = 1.0 mm = 1 x 10⁻³ m

Area of the beam = πr² = π(1 x 10⁻³ )² = 3.142 x 10⁻⁶ m²

The average intensity of the light = P / A

The average intensity of the light = ( 1 x 10⁻³) / (3.142 x 10⁻⁶)

The average intensity of the light = 318.27 W/m²

The peak value of the electric field is given by;

E_o = \sqrt{\frac{2I_{avg}}{c\epsilon_o}}\\\\E_o = \sqrt{\frac{2(318.27)}{(3*10^8)(8.85*10^{-12})}}\\\\E_o = 489.64 \ V/m

Therefore, the peak value of the electric field is 489.64 V/m.

4 0
3 years ago
5. A 5.0 kg object accelerates uniformly from rest for 5.0 s and reaches a final velocity of 20.0 m/s. At 3.0 s, what is the obj
irina [24]

Answer:

jack JACKKK

Explanation:

OK YAHHHHH SO DO THIS

3 0
4 years ago
Producers,____________, and_______________ help to move matter and energy through ecosystems.
Phoenix [80]
Producers, consumers, and decomposers help to move matter and energy through ecosystems.

Hope this helps! :)
3 0
3 years ago
Janice has just measured the density of an object. Which value is possible? (Density: D = )
babunello [35]
It is 6 g/cm3 because density cannot be negative, and it is not speed in which the unit would be m/s.
6 0
3 years ago
Read 2 more answers
Other questions:
  • A solid uniformly charged insulating sphere has uniform volume charge density p and radius R. Apply Gauss's law to determine an
    13·1 answer
  • What happens when you drink water that was in the car heated then you drink it. Make sure to explain your answer to make you as
    5·2 answers
  • Stars release huge amounts of radiation from their surfaces while on the main sequence. why is this necessary if a star is to ma
    15·1 answer
  • It takes a car 2 minute(s) to go from rest to 25 m/s east. What is the acceleration
    14·1 answer
  • Two small particles of mass m1 and mass m2 attract each other with a force that varies inversely with the cube of their separati
    11·1 answer
  • PLZ HELP I DONT GET IT
    5·1 answer
  • 1. Which pair of physical quantities consists of two vectors?
    6·2 answers
  • 10
    5·1 answer
  • What do pressure and temperature determine about a gas
    6·1 answer
  • Ii. Which of these has a heating element with a low melting point?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!