Which part (s) of a telephone involves the conversion of sound waves to electrical signals?

a) the microphone

b) neither the speaker nor the microphone

c) the speaker

d) both the speaker and the microphone

What change occurs every time elements form a compound? A. The state of matter in the compound will change. B. Ratio of the elements in the compound will vary. C. Original properties of the elements will change. D.

The ingredient label for a fruit drink reads: water, sugar, orange juice, high fructose corn syrup, vitamin C, sodium benzoate (preservative), Red 40, Blue 1.

How many moles of potassium are contained in 150 g of potassium

Will heating generally increase or decrease the amount of solid solute that will dissolve in the solution? A. Increase B. Decrease

Which of the following is considered a hypothesis as opposed to an observation

When an ionic compound such as sodium chloride (NaCl) is placed in water, the component atoms of the NaCl crystal dissociate into individual sodium ions (Na+) and chloride ions (Cl-). In contrast, the atoms of covalently bonded molecules (e. g.

From A complete stop a car reaches a velocity of 280 KM/S east in 7 seconds what is the rate of acceleration? A. 4 KM/S B. 7 KM/S C. 40 KM/S D. 70 KM/S

How sand is deposited along coastline

How do the reaction rates change as the system approaches equilibrium?

Based on the symmetry of the molecules, which is a polar molecule? SeCl2 (bent) BeCl2 (linear) BF3 (trigonal planar) CF4 (tetrahedral) O2 (diatomic linear)