Help ASAP PLZZZZ!! I will give brainlist to the first right person.
2 answers:
Answer:
1. The Speed is 390
2. The Frequency is 425 Hz
3. The Wavelength is 1.3
Explanation:
1. To find the speed of a wave you have to do the formula of speed.
Speed = Wavelength x Wave Frequency.
Speed = 1.5 * 260
= 390
2.
Formula
F=
F = 340 / 0.8
= 425
3.
Formula
Wavelength = speed / frequency
Wavelength = 440 / 344 (rounded to nearest tenth if necessary)
= 1.3
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Answer:
e. 1944.4; redshift
Explanation:
The hydrogen Balmer line Hβ has a wavelength of 486.1 nm in the laboratory. It is observed in a quasar at 2430.5 nm. What is the change in wavelength (in nm) of this quasar? Is it a "redshift" or "blueshift"?
a. 0; no change
b. 2430.5; redshift
c. 486.1; blue shift
d. 1944.4; blueshift
e. 1944.4; redshift
Solution
wavelength is the distance between two successive crest or the difference between two successive trough.
it is also the ratio between velocity and frequency
difference in wavelength=
2430.5 nm-486.1 nm=
1944.4; redshift
When an object moves away from us, the light is tilted to the red end of the spectrum(combination of seven colours), as its wavelengths get longer
Answer:
10.44 liters of gasoline.
Explanation:
First, we need to convert the units of the car from mi/gal to km/L as follows:
That means that for every liter of gasoline the car travels 13.60 kilometers.
So, to complete a 142-km trip in Europe the volume of gasoline needed is:
Therefore, to complete a 142-km trip in Europe we need to buy 10.44 liters of gasoline.
I hope it helps you!