Aduck floating on a lake oscillates up and down
5.0 times during a 10.-second interval as a
periodic wave passes by. what is the frequency
of the duck’s oscillations?
(1) 0.10 hz (3) 2.0 hz
(2) 0.50 hz (4) 50. hz

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

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

The speed of light can be used to measure the