The speed of sound through air at 20°C is 343 meters per second. The speed of sound through fresh water at 20°C is
1,482 meters per second.
Which of the following could be the speed of sound through solid steel?
A. 353 meters per second
B. 145 meters per second
C. 5,960 meters per second
D. 1,370 meters per second

To protect all four receptacles on a branch circuit that surrounds a swimming pool, you would install which of the following configurations? a. gfci feed-through receptacle at the end of the load's circuit b. gfci-terminated receptacle at the beginning of the load's circuit c. gfci feed-through receptacle at the beginning of the load's circuit and the other receptacles connected to the load side of that receptacle d. gfci-terminated receptacle at each end of the load's circuit

Which feature indicates that mars resides in the inner region of the solar system

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point