The operation of a microwave oven makes use of
A) the polar nature of water molecules.
B) flip flopping of polarized molecules.
C) an oscillating electric field.
D) all of the above
E) none of the above
Answer: D
You might also like to view...
Sandy soils tend to have
A) high porosity and high permeability. B) high porosity and low permeability. C) low porosity and low permeability. D) low porosity and high permeability.
An object that is a perfect absorber and emitter of radiation is called a(n) _______________
Fill in the blank(s) with correct word
How many significant figures are in the number 0.0037010?
A) four B) five C) six D) seven E) eight
A flat coil of wire consisting of 15 turns, each with an area of 40 cm2, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 1.5 T to 5.1 T in 2.0 s. If the coil has a total resistance of 0.20 ?, what is the magnitude of the induced current?
a. 7.65E–1 A b. 5.40E+1 A c. 5.40E–1 A d. 8.64E–2 A e. 2.16E–1 A