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
Ira Lisetskai [31]
3 years ago
8

A camera gives a proper exposure when set to a shutter speed of 1/250 s at f-number F8.0. The photographer wants to change the s

hutter speed to 1/1000 s to prevent motion blur. To maintain proper exposure, she should also change the f-number to...? The answer is F4.0.
Physics
1 answer:
Oksana_A [137]3 years ago
5 0

Answer:

F4.0

Explanation:

To obtain a shutter speed of 1/1000 s to avoid any blur motion the f-number should be changed to F4.0 because the light intensity goes up by a factor of 2 when the f-number is decreased by the square root of 2.

You might be interested in
What mass of water must evaporate from the skin of a 70.0 kg man to cool his body 1.00 ∘C? The heat of vaporization of water at
romanna [79]

Answer:

100 cc

Explanation:

Heat released in cooling human body by t degree

= mass of the body x specific heat of the body x t

Substituting the data given

Heat released by the body

= 70 x 3480 x 1

= 243600 J

Mass of water to be evaporated

= 243600 / latent heat of vaporization of water

= 243600 / 2420000

= .1 kg

= 100 g

volume of water

= mass / density

= 100 / 1

100 cc

1 / 10 litres.

6 0
3 years ago
PLEASE HELP FAST!!!
ELEN [110]

Answer:

1.It improved by using the Mars survey probe, that took a portrait of the planet that helped us see the climate of Mars.

Explanation:

I watched the video.

7 0
3 years ago
What can you tell from comparing these waves? Please help
elena-s [515]

Answer:

Explanation:

A

5 0
2 years ago
Read 2 more answers
Which of the following best describes the location of the
marshall27 [118]

Answer:

The mantle exists above the crust of the earth

8 0
2 years ago
What is a rubens tube
Free_Kalibri [48]

Answer:

its an antique physics apparatus for demonstrating acoustic standing waves in a tube.

6 0
3 years ago
Other questions:
  • Question 5 At 12:00 pm, a spaceship is at position ⎡⎣324⎤⎦ km ⎣ ⎢ ⎡ ​ 3 2 4 ​ ⎦ ⎥ ⎤ ​ km away from the origin with respect to so
    6·1 answer
  • At sunset, the sun appears reddish. What is MOST LIKELY the reason for this phenomenon?
    5·2 answers
  • Distinguish between the key features of Charles's Law and
    7·1 answer
  • Help me with number 2 please
    15·1 answer
  • A force of 20 N is executed to raise a rock weighing 30 N. What is the actual mechanical advantage?
    11·2 answers
  • OOOO
    10·1 answer
  • Which of the following statements is true vibrations ?
    5·1 answer
  • The diagram below shows a 1.0 x 105newton truck at rest on a hill that makes an angle of 8.0° with the
    8·1 answer
  • What has occurred when metal changes color because of tarnishing?
    6·2 answers
  • If you put 3.27 moles of an ideal
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!