The number of valence electron information on the periodic table is used to complete electron dot diagrams. One can obtain the number of valence electron information on the periodic table by determining the column number of the periodic table. The first column number has 1 as the number of its number of valence electron and so on.
It's D. Gravity holds everything in place
Correction
One food calorie is not 103 calories, rather, 1000 calories
Answer:
4.2 km
Explanation:
One food calorie is equal to 1000 calories and each calorie has 4.184 J hence for 617 food calories, the energy is equal to 617*1000*4.184
This energy is also given by mgh, the potential energy. M is the mass, g is acceleration due to gravity and h is height in metres.
Substituting 62.7 kg for m, 9.8 for g then
62.7*9.8h=617*1000*4.184
Newton's second law applies. That is,
F=ma, F = Wall force on the object, m = mass of the object, a = Deceleration = Δv/t = (6-8)/2 = -1 m/s
F = 1.2*1 = 1.2 N
The continent of Antartica is located at the bottom of the world. the South Pole is at its center. Antarctica is the coldest and windiest place on earth. It is covered with ice up to 3 miles thick. Very few plants and animals can survive here, but penguins, fish, and seals live on the coast and in the seas. No people live on Antarctica permanently, but scientists and tourists visit.