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
NARA [144]
3 years ago
15

Estimate the linear separation (in kilometers) of two objects at a distance of 2.6 × 108 km that can just be resolved by an obse

rver on Earth (a) using the naked eye and (b) using a telescope with a 5.0-m diameter mirror. Use the following data: diameter of pupil = 5.0 mm; wavelength of light = 550 nm.
Physics
1 answer:
cestrela7 [59]3 years ago
6 0

Answer:

34892 km

34.892 km

Explanation:

L = Distance of two objects = 2.6\times 10^8\ km

\lambda = Wavelength = 550 nm

When d = Diameter of pupil = 5 mm

Linear separation

\frac{D}{L}=\frac{1.22\lambda}{d}\\\Rightarrow D=\frac{1.22\lambda L}{d}\\\Rightarrow D=\frac{1.22\times 550\times 10^{-9}\times 2.6\times 10^8\times 10^3}{5\times 10^{-3}}\\\Rightarrow D=34892000\ m=34892\ km

Linear separation = 34892 km

When d = 5 m

\frac{D}{L}=\frac{1.22\lambda}{d}\\\Rightarrow D=\frac{1.22\lambda L}{d}\\\Rightarrow D=\frac{1.22\times 550\times 10^{-9}\times 2.6\times 10^8\times 10^3}{5}\\\Rightarrow D=34892\ m=34.892\ km

Linear separation = 34.892 km

You might be interested in
) What is the electric potential due to the nucleus of hydrogen at a distance of 7.50× 10-11 m? Assume the potential is equal to
ohaa [14]
For this, we need the formula:
V = k q / r
where k is the Coulombs law constant = 9 x 10^9 N
q is the charge of the hydrogen nucleus (proton) = <span>1.6 x 10^-19 C</span> 
r is the distance
Simply plug in the values and solve for V
5 0
3 years ago
Read 2 more answers
EX 6-1 A ball is twirled on a 0.870 - m-long string with a constant speed of 3.36 m / s . Calculate the acceleration of the ball
Elina [12.6K]

Answer:

a=12.97\ m/s^2

Explanation:

Given that,

The length of a string, l = 0.87 m

Speed of the ball, v = 3.36 m/s

We need to find the acceleration of the ball. The acceleration acting on the ball is centripetal acceleration. It is given by :

a=\dfrac{v^2}{r}\\\\a=\dfrac{(3.36)^2}{0.87}\\\\=12.97\ m/s^2

So, the acceleration of the ball is 12.97\ m/s^2.

4 0
3 years ago
A factory worker pushes a 32.0 kg crate a distance of 7.0 m along a level floor at constant velocity by pushing horizontally on
g100num [7]

Answer:

(a) 81.54 N

(b) 570.75 J

(c) - 570.75 J

(d) 0 J, 0 J

(e) 0 J  

Explanation:

mass of crate, m = 32 kg

distance, s = 7 m

coefficient of friction = 0.26

(a) As it is moving with constant velocity so the force applied is equal to the friction force.

F = 0.26 x m x g = 0.26 x 32 x 9.8 = 81.54 N

(b) The work done on the crate

W = F x s = 81.54 x 7 = 570.75 J

(c) Work done by the friction

W' = - W = - 570.75 J

(d) Work done by the normal force

W'' = m g cos 90 = 0 J

Work done by the gravity

Wg = m g cos 90 = 0 J

(e) The total work done is

Wnet = W + W' + W'' + Wg = 570.75 - 570.75 + 0 = 0 J  

6 0
3 years ago
Rami uses a disposable camera that has a flash. When he wants to take a picture, he holds a button and hears a rising whining so
ivann1987 [24]
<span>It stores energy and delivers it in a short burst.

The whirring sound is produced by the charging of the capacitor. A capacitor is an electrical component which is capable of storing charge. When the capacitor stores charge, it is storing energy. After doing so, the capacitor releases the electrical energy that it had stored as light energy, which is seen as the flash of the camera. It must do so in a burst, because the intensity of the flash is very high and would require a high amount of energy to maintain.
</span>
6 0
3 years ago
Can someone answer my last question you could get 25 points total​
enyata [817]

Answer:

Hi where is question. Hope you understand me

5 0
2 years ago
Other questions:
  • A VW beetle goes from zero to 27m/s in 7.6 seconds. What is the acceleration?
    5·1 answer
  • 1. In a motor vehicle crash, as a car crushes, it absorbs some of the force of the collision.
    7·2 answers
  • A large box of mass M is moving on a horizontal floor at speed v0. A small box of mass m is sitting on top of the large box. The
    12·1 answer
  • Please help
    12·1 answer
  • Part A
    7·2 answers
  • Facts about earths rotation
    14·2 answers
  • When an object slides,there is less friction than when it rolls
    15·1 answer
  • The International Space Station has a mass of 419,455 kg. When the station
    11·1 answer
  • The p-type or N-type semiconductor is not of practical use. Why?​
    8·1 answer
  • 20. Q: How long will it take for an apple falling from a 29.4m-tall tree to hit the ground?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!