Answer:
Explanation: pressure = force / area
Rearrange to get: force = pressure x area. 900 cm2 = 0.09 m2
force = 90 x 0.09
= 8.1 N
Answer:
In the electromagnetic spectrum, "Blue" is the "highest" frequency color of visible light.
Or In the electromagnetic spectrum, "Red" is the "Lowest" frequency color of visible light.
Hope this helps!