Answer:
Part a)
Part b)
t = 12 s
Explanation:
Part a)
Tension in the rope at a distance x from the lower end is given as
so the speed of the wave at that position is given as
here we know that
now we have
Part b)
time taken by the wave to reach the top is given as
The 30-40 minutes length of the nap has the same effect as drinking an energy drink.
<u>Explanation:</u>
<u>Benefits of napping:</u>
- Naps can reestablish alertness, improve performance, and decrease mistakes and accidents.
- Naps can improve learning ability performance.
- Naps can enhance alertness in the period immediately succeeding the nap and may increase sharpness in the rest of the day.
- The person who has been affected by narcolepsy is highly suggested by the doctors to take a nap
- Napping has a lot of psychological benefits.
- It is a simple way to get some relaxation and rejuvenation.
The date the model was published.
The use of “laws” originated prior to science splitting from natural philosophy. There’s an implicit assumption that God as the creator laid down both moral and natural laws, with the theologian concerned with the former and the natural philosopher concerned with the latter.
“Theory” begins to take hold in the late 1700s and, very roughly speaking, is used to describe more complex models. “Law” eventually became nearly archaic, although still used to describe very pithy models (Amdahl’s Law, Gustafson’s Law).
The word “model” is gradually superseding both of them.
People have tried to come up with hard-and-fast rules to distinguish them, but scientists are unruly beasts, and use whatever language suits them in the moment.
Answer:
A warm front brings gentle rain or light snow, followed by warmer, milder weather. Stationary front Forms when warm and cold air meet and neither air mass has the force to move the other. They remain stationary, or “standing still.” Where the warm and cold air meet, clouds and fog form, and it may rain or snow.
Hope this helps :)