Answer:
D. Wavelength
Explanation:
An infrared (IR) and ultraviolet (UV) wave propagating through a vacuum must have the same wavelength.
243000, take the 4,860 and times it by 50
Answer:
I would have to say the answer is D
Explanation:
because the angle is being changed using the ray box.
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.
