If a sound waves frequency is 100hz. what is its period

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical

Ahuge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. the upper face carries +95.0 nc/m2 while the lower face carries -25.0 nc/ m2. what is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ε0 = 8.85 × 10-12 c2/n · m2)

Where should a carbon monoxide detector be mounted?