Answer:
a periscope use total internal reflection to allow us to see things
the reflection happens at 45°
Explanation:
The mass of a plastic spoon
The current international standard metric system, it is mks system based on metre, kilogram and second as well as the kelvin ampere candela and mole
Answer:
<em>The speed of the passengers is 5.24 m/s</em>
Explanation:
<u>Uniform Circular Motion
</u>
It occurs when an object in a circular path travels equal angles in equal times.
The angular speed can be calculated in two different ways:

Where:
v = tangential speed
r = radius of the circle described by the rotating object
Also:

Where:
f = frequency
Since the frequency is calculated when the number of revolutions n and the time t are known:

The Ferris wheel has a diameter of 100 m and makes n=1 rotation in t=60 seconds, thus the frequency is:

The angular speed is:

Now we calculate the tangential speed, solving this formula for v:


The radius is half the diameter, r=100/2=50 m:

Calculating:
v = 5.24 m/s
The speed of the passengers is 5.24 m/s
Lamina and turbulent flow
Explanation:
mentioning about lamina and turbulent flow we could say that both form in different period of time