2. Under what part of the light spectrum do the petals of a rose appear red?

Because the petals reflect the red part of the white light and the leaves reflect the green part of the white light.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27