Answer:
Frequency is 0.5 Hz and the wave speed is 10 m/s.
Explanation:
As we know that frequency is defined as the how many times the no of cycles repeat in one second so if the wave is vibrating up and down twice during 1 second then the frequency in 1 second is

Therefore frequency is 0.5 Hz.
Now the distance of wawe in each second is,

Now the wave velocity is,

Here, f is frequency, d is the distance, v is the wave velocity.
Substitute all the variables

Therefore the wave speed is 10 m/s.
Answer: Plenty
Explanation:
some words are Hi, Banana, Dude and many more
<span>When picking up a load, the correct fork spacing must be spaced in an evenly manner in which the centre stringer of the pallet and the balance of the load should be spaced evenly in which makes the picking up the load to be correct and well-balanced.</span>
An educated guess is a “hypothesis”