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
jekas [21]
3 years ago
12

What problem do refractor telescopes have that reflectors don't? Group of answer choices bad seeing light loss from secondary el

ements diffraction limited resolution spherical aberration chromatic aberration
Physics
1 answer:
Paul [167]3 years ago
8 0

chromatic aberration problem do refractor telescopes have that reflectors don't

<u>Explanation:</u>

Chromatic aberration is a phenom in which light rays crossing through a lens focus at various points, depending on their wavelength. Chromatic aberration is a dilemma in which lens or refracting, telescopes undergo from. The various image distances for the respective colors affect various image sizes for them.

This involves the creation of disturbing color fringes in the image. Chromatic aberration can be pretty well adjusted by the use of an achromatic doublet. Here, a positive biconvex lens is coupled with a negative lens placed backward with greater dispersion. Thus partly compensates for the chromatic aberration.

You might be interested in
Two friends, Al and Jo, have a combined mass of 168 kg. At an ice skating rink they stand close together on skates, at rest and
Keith_Richards [23]

Answer: 91.94 kg

Explanation: Supoose Al's mass is m. The combined mass is 168kg, so Jo's mass is 168 - m.

The Law of Conservation of Momentum states that when two objects collide, the total momentum of both objects before the collision is the same as the total momentum of both objects after the collision.

At the beginning, Al and Jo are united without movement, so their initial momentum is zero.

After the release of their hands, Al goes in one direction and Jo moves to the opposite direction. Suppose the direction Al is moving is positive. Conservation of momentum will be

m_{1}v_{1}_{(f)}+m_{2}v_{2}_{(f)}=m_{1}v_{1}_{(i)}+m_{2}v_{2}_{(i)}

where

index i referes to initial momentum

index f to final momentum

index 1 refers to Al

index 2 to Jo

Calculating:

m(0.91)-[(168-m)(1.1)]=0

0.91m+1.1m-184.8=0

2.01m=184.8

m = 91.94

Al has a mass of 91.94 kg.

6 0
2 years ago
Maggie participated in a race. She ran 100 meters west and then turned back and ran to the starting line to complete the race. M
earnstyle [38]
Her total distance was 200 meters, since she ran 100 meters west and the same 100 meters back. This gives an average speed of 200 m / 40 s = 5 m/s.

However, her displacement was 0, since she ended at the same place she began, therefore, her average velocity is 0 / 40 s = 0.
3 0
3 years ago
How does kinetic energy affect the stopping distance of small vehicle compared to a large vehicle
Nadusha1986 [10]
The kinetic energy for a large vehicle is different from that of a smaller vehicle, assuming that the vehicles are travelling at the same speed and stopping the same distance. This is because for a larger vehicle the kinetic energy is higher, as the mass for a larger vehicle, is more than the smaller vehicle.
4 0
3 years ago
Joe places two solid objects in contact with each other.
Tasya [4]

Answer:

B. temperature of the objects

5 0
3 years ago
________________ can carry thermal energy from object to object, even through empty space.
sdas [7]
Radiation can carry thermal energy.
8 0
3 years ago
Other questions:
  • A certain copper wire has a resistance of 10.5 ω. at what fraction of the length l must the wire be cut so that the resistance o
    6·1 answer
  • A ball is launched vertically with an initial speed of y˙0= 50 m/s, and its acceleration is governed by y¨=-g-cDy˙2, where the a
    7·1 answer
  • The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 10 m radius
    6·1 answer
  • What is the mass of a falling rock if it produces a force of 50 N?
    14·1 answer
  • How did cyanobacteria affect early Earth’s biosphere? Select all that apply. Cyanobacteria allowed organisms that rely on oxygen
    15·1 answer
  • What is the sound intensity level in a car when the sound intensity is 0.525 μW/m2 ? Use I0 = 1.00×10−12 W/m2 for the reference
    8·1 answer
  • Please help with this conversion question about heat!<br> WILL MARK BRAINLIEST!!!
    13·2 answers
  • An object with a weight of 20 kg will move _______ an object with a weight of 20 g if the same amount of force is placed on the
    13·1 answer
  • Mass of trolley (m):
    11·1 answer
  • The 20 kg at angle of 53⁰ in an inclined plane is realsed from rest the coefficient of friction bn the block and the inclined pl
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!