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
kumpel [21]
3 years ago
11

A stargazer has an astronomical telescope with an objective whose focal length is 195 cm and an eyepiece whose focal length is 1

.08 cm. He wants to increase the angular magnification of a galaxy under view by replacing the telescope's eyepiece. Once the eyepiece is replaced, the barrel of the telescope must be adjusted to bring the galaxy back into focus. If the barrel can only be shortened by 0.56 cm from its current length, what is the best angular magnification the stargazer will be able to achieve
Physics
1 answer:
Colt1911 [192]3 years ago
6 0

Answer:

The best angular magnification is

-375

Explanation:

Fe = Fo - L

From the question, (Fo) = 1.08 cm while (L) = 0.56cm

Thus, Fe = 1.08 - 0.56 = 0.52cm

Now, let's apply the angular magnification equation ;

M = - Di/Do

Where Di is the distance from the lens to the image and Do is the distance of the object to the lens.

In this question, Di is represented by f which is the distance from the lens to the image and it is f= 195cm

Also,Do is represented by Fe which is 0.52cm and it is the distance of the object to the lens.

Thus m = - f/fe = - 195/0.52 = - 375

You might be interested in
What do we call the movement of electric charge?<br> A. Power B. Voltage C. Resistance D. Current
Alex Ar [27]
D. Current

Hope I helped!
4 0
2 years ago
Read 2 more answers
Define speed and what is it’s SI unit.
Nadusha1986 [10]
Speed can be thought of as the rate at which an object covers distance. ... Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour........?
7 0
2 years ago
Read 2 more answers
Which process usually requires water?A.Physical weatheringB.ErosionC.Mass wastingD.Chemical weathering
MAXImum [283]

Answer:

B erosion

Explanation:

Erosion would usually require water

8 0
2 years ago
1. Describe the motion of the race car shown in the graphic
zmey [24]

The car will slow down due to the negative acceleration (backward)

Explanation:

The figure is missing: find it in attachment.

To answer this question, we have to use Newton's second law, which states that:

F=ma

where

F is the net force on an object

m is its mass

a is its acceleration

We have to apply this law separately on the horizontal direction and vertical direction.

- In the vertical direction, we have two forces acting on the car: 2000 N upward and 2000 N downward, so they cancel out, and the net force in the vertical direction is zero.

- In the horizontal direction, the net force is instead

F=6000 N - 8000 N = -2000 N

In the backward direction (to the right).

So, according to Newton's second law, the car will experience a horizontal acceleration:

a=\frac{F}{m}= -\frac{2000 N}{m}

And the acceleration has the same direction as the net force (so, backward). This means that the acceleration is opposite to the direction of motion of the car, so the car will slow down, since its velocity will decrease.

Learn more about acceleration:

brainly.com/question/9527152

brainly.com/question/11181826

brainly.com/question/2506873

brainly.com/question/2562700

#LearnwithBrainly

3 0
3 years ago
An aluminum sphere (specific gravity = 2.70) falling through water reaches a terminal speed of 4.58 cm/s. What is the terminal s
enyata [817]

Answer:2.69 cm/s

Explanation:

We know that drag force

Fd=6 πμ r v

μ=Dynamic viscosity

r=radius

v=terminal velocity

Bouncy force

Fb= ρ V g

rho_w=density\ of\ water

V=volume

At the condition of terminal velocity

when going down ( aluminum)

Fb+ Fd= m g

 Fd_1 = m g - Fb_1---------1

when going up ( air)

Fb_2= mg +Fd

Fd_2= Fb_2 - mg-----------2

m =mass of object

m= density\times volume

\rho_a=density\ of\ Aluminium

\rho _b=density\ of\ bubble

Divide 1 and 2

\dfrac{v_1}{v_2}=\dfrac{mg-F_b_1}{F_b_2-mg}

\dfrac{4.58}{v_2}=\dfrac{\rho _a-\rho _w}{\rho _w-\rho _b}

divide by  \rho _w in R.H.S

\dfrac{4.58}{v_2}=\dfrac{2.7-1}{1.-0.0012}

v_2=\dfrac{4.58}{1.7}=2.69\ cm/s

3 0
3 years ago
Other questions:
  • The refrigeration cycle uses _____.
    6·2 answers
  • If I finished my growth spurt, will I still continue to grow taller? (I’m a 14 year old male by the way)
    15·2 answers
  • Which of the following is an example of a projective test?
    5·1 answer
  • A solid sphere rolls along a horizontal, smooth surface at a constant linear speed without slipping. What is the ratio between t
    5·1 answer
  • A 90 kg body is taken to a planet where the acceleration due to
    7·1 answer
  • Where in the cell can you find the location of inherited traits?
    5·2 answers
  • Can anyone please tell me the properties of image formed in a spherical mirror?
    7·2 answers
  • Blonde hair is produced by inheriting double recessive alleles (bb) from one’s parents. What is the probability of their offspri
    15·1 answer
  • 3) How far will 20 N of force stretch a spring with a spring constant of 140 N/m?
    6·1 answer
  • Effect of Solvent:
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!