Red light would be commonly used due to the longer wavelength
Answer: It is a transverse wave ^^
Explanation:
Answer:

Explanation:
So suppose the axis of rotation is perpendicular to the surface of the disk, then the moment of inertia can be calculated as the following:

We can convert the rotation speed in term of 0.8 seconds per revolution to the angular velocity knowing that each revolution is 2π

Then the rotational angular momentum of the disk is:

In case the axis of rotation is parallel with the surface, the moment of inertia would have a formula of:

The 50 W bulb would have a greater current than the 90 W bulb
7(a) transpiration is faster in warmer dry air
(b)(I)xylem
(ii) 1. They are stacked end-to-end
2. Consists of dead cells