Physics, 17.06.2020 03:57 samueldfhung
This is how sodium appears in the periodic table. An orange box has N a at the center and 11 above. Below it says sodium and below that 22.99. A blue arrow points to 22.99. The arrow is pointing to sodium’s number of neutrons. number of valence electrons. combined number of neutrons and protons. combined number of electrons and protons.
Answers: 2
Physics, 21.06.2019 19:30
A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off
Answers: 2
Physics, 22.06.2019 22:30
You add 800 ml of water at 20c to 800 ml of water at 80c what is the most likely final temperature of the mixture ? a. 100c b. 60c c. 25 c d.50c
Answers: 1
Physics, 22.06.2019 23:40
Which type of energy is transferred by convection currents?
Answers: 2
Physics, 23.06.2019 01:30
In general what determines whether atoms will form chemical bonds?
Answers: 2
This is how sodium appears in the periodic table. An orange box has N a at the center and 11 above....
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