Answer:
A ( Jack did twice as much work as Jill
Explanation:
A peak in the sunspot count is referred to as a time of "solar maximum" (or "solar max"), whereas a period when few sunspots appear is called a "solar minimum" (or "solar min"). An example of a recent sunspot cycle spans the years from the solar min in 1986, when 13 sunspots were seen, through the solar max in 1989 when more than 157 sunspots appeared, on to the next solar min in 1996 (ten years after the 1986 solar min) when the sunspot count had fallen back down to fewer than 9.
There are 50 vibrations in 30 seconds
So frequency is given by


Now we can also find the speed of wave
speed is defined as ratio of distance and time



now to find the wavelength we can use the relation between frequency, wavelength and speed
this relation is given as



so the wavelength is 2 cm
The graph is a linear
It is a increases
Answer:
this is a direct relationship
Explanation: