Universe contains billions and billions of stars, galaxies, planets, asteroids, comets and many more different type of bodies. These objects emit radiations of varied frequency. In order to study these different kind of objects, different kind of technology is required. There are different type of missions: some contain probes which land on the surface, some orbit the bodies etc. These are for solar system. Yet some are space observatories having detectors to study light from distant objects. Further, there are different detectors for different wavelengths of electromagnetic spectrum.
<span>No sé una palabra que acaba de decir, ¿se puede decir en inglés por favor ???</span>
Answer:
The contact angle is the angle, conventionally measured through the liquid, where a liquid–vapor interface meets a solid surface.
Explanation:
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Nine
Basically you are using d = r * t
Frequency is 1 / t
d is more commonly represented by lambda (
). Lambda is the wavelength.
so the formula = c / f
More commonly it is written as *f = c.
Givens
c = 3*10^8 m/s
= 0.1 nm = 0.1 nm *[1 m /1 * 10^9 nm] = 0.1 * 10^ - 9 meters.
f = ??
f = 
f = 3 * 10^8 * 10^9 / 0.1 = 3 * 10^18
Answer: C
Ten
= c/f
= 3*10^8 / 1 * 10^16
= 3*10^-8 meters
= 30 * 10^-9 meters = 30 nm
Answer: D
18 is A let me figure out the rest
