Answer: The inner core is solid, the outer core is liquid, and the mantle is solid/plastic. This is due to the relative melting points of the different layers (nickel–iron core, silicate crust and mantle) and the increase in temperature and pressure as depth increases.
Explanation: I just did a quiz with this question
10/70×360°
=51.4°
hope thus helps
Frequency can be defined as the ratio between the speed of the wave and its wavelength, that is
At the same time, the frequency is the inverse of the Period so
If we join the two expressions we will have to
Replacing we have that
Therefore the period of the wave is
Explanation:
Resistors can be connected in two ways;
1. Series connection
2. Parallel connection
When resistors are connected in series, the effective resistance is simply by adding up Rtotal = R1 + R2 + R3...
But when the are connected in parallel the effective resistance is simply 1/Rt = 1/R1 + 1/R2 + 1/R3
You can choose any value for your R1, R2 and R3 try it and see for yourself.
Good luck
The answer to the question above is letter "D. sound pitch". This is a perceptual quantity that allows to order the frequency-related values. More commonly, it allows people to classify music as "higher" or "lower" in the sense of musical melodies.