To solve this problem we will use the three requested concepts: Wavelength, frequency and period.
The wavelength is the distance between each crest, therefore it is already given and is 0.8m
<em>The correct answer is C.</em>
The frequency can be described as a relationship between wave speed and wavelength therefore



<em>The correct answer is B.</em>
The period is the inverse of the frequency therefore



<em>The correct answer is B.</em>
I’m pretty sure that it’s true. Hope this helps
For transfomers (robots in disguise), there are equations to help us solve these problems.
Here are the equations you need:


is our V primary,

is our V secondary,

is our number of loops on our primary and

is number of loops in our secondary.
Plugging our known values in, we can solve for the secondary voltage.


For current, we have another equation:

Just like before, we can plug in our known values:


Since we are told there are no losses, the input power must equal output power.
(0.5A)(1760V)=(220V)(4A) = 880W
Answer:
Explanation:
Since the definition of true experiment has been provided in the question, let's proceed to define some other parameters.
Scientific investigation <u>that might not involve a true experiment is called non-experimental research </u>while the one that involves a true experiment is called experimental research.
Non-experimental researches are usually descriptive in nature. An example of a non-experimental research is the observation and recording of the number and the beak type of birds that visits a park. As seen, this experiment does not have it's variables set out for identification or even control.