Sound does not travel though ? A. Water
B. Steel rails
C wooden doors
D other space

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

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