The answer is ; white dwarfs are warmer and have lower luminosity than supergiants
The reason white dwarfs have lower luminosity is that they are way smaller in size than supergiants, even though their temperatures are way higher in comparison.
White dwarfs and red giants are formed when the hydrogen fuel at the core of the stars is exhausted. When the star is 1 to 10 solar masses of the sun, then it forms a red giant.
Answer:
This difference is kept to a minimum because the resistance in transformers is a few tens of ohms and the resistance of modern voltmeters is of the order of MΩ.
Explanation:
A voltmeter is built by a galvanometer and a resistance in series, this set is connected in parallel to the resistance where the voltage is to be measured, therefore the voltage is divided between the voltmeter and the element to be measured, consequently the measured voltage It is less than the calculated one, since for them the resistance of the voltmeter is assumed infinite.
This difference is kept to a minimum because the resistance in transformers is a few tens of ohms and the resistance of modern voltmeters is of the order of MΩ.
Answer:
When they pull on the rope, they each slide toward each other. How do their accelerations compare and how far does each person slide before they meet? The force on each will be the same so they will always have the same acceleration -- and, because of that, the same velocity and they will move the same distance.
F=ma so,we have
f=300.3=900 N
but you should say 3 m/s^2
For the given wave speed, the frequency is 2.0 Hz
<h3>What is frequency?</h3>
The frequency is the number of cycles per second in the sinusoidal wave.
Given is the length of the string L = 40cm, the wave speed v =320 cm/s, then the wavelength is
λ =4L
λ =4 x 40 cm =160 cm.
The frequency is related to the wavelength as
f =v/λ
f =320/160
f=2.0 Hz
Thus, the frequency is 2.0 Hz.
Learn more about frequency.
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