Which wavelength band uses observatories on aircraft?

a. ultraviolet b. visual
c. infrared d. X-ray


c

Physics & Space Science

You might also like to view...

Consider a camera with a 20. cm diameter lens recording images at 600. nm wavelength

(a) What is the angular resolution limit? (b) What is the minimum sized features which can be resolved on Mars (at a distance of 9.0 × 107 km) with this lens?

Physics & Space Science

A hoop is rolling without slipping along a horizontal surface with a speed of 5.50 m/s when it starts up a ramp that makes an angle of 25.0° with the horizontal. What is the speed of the hoop after it has rolled 3.00 m up the ramp?

A) 4.22 m/s B) 1.91 m/s C) 2.06 m/s D) 3.79 m/s E) 8.02 m/s

Physics & Space Science

A 4 kilogram block of ice is removed from a freezer where its temperature was maintained at –20 degrees Celsius. How much heat does the ice absorb as it is warmed to –10 degrees? (The specific heat capacity of ice is 2,000 joules per kilogram degree Celsius.)

Physics & Space Science

An observer stands 3 m from speaker A and 4 m from speaker B. Both speakers, oscillating in phase, produce 170-Hz waves. The speed of sound in air is 340 m/s. What is the phase difference (in radians) between the waves from A and B at the observer's location, point P?

?

?

a.
0

b.
?/2

c.
?

d.
2?

e.
4?

Physics & Space Science