Answer:
A. 37
Explanation:
As CEC of soil can be maintained by the type of caution exchange from soil like Na, K, thus decrease of H+ ions increase the variable charges and thus increasing the capacity, Histosols, Mollisols, and vertisols have a high CEC order. And clay consists of roughly composed chlorite, kaolinite, and most of soil humus.
Answer: at the equator the normal force will be 3.4N less and at the North Pole = 980N
Explanation:
So, we will start the Calculation by considering the equation below;
Fnet = F(g) - F(N); where Fnet = mv^2/ r.
Hence, F(g) - F(N) = mv^2/ r -------------(1).
Making F(N) the subject of the formula, we have;
F(N) = Gm1m2/r^2 - mv^2/r.
Thus, we have;
Gm1m2/r^2 = 6.68 × 10^-11 × (5.98 × 20^24) × 100/ 6.38 × 10^6 = 980N.
Also, we have;
mv^2/r = m4π^2r/T^2.
100 × 6.38 ×10^6 × 4π^2/(24 × 3600)^2 = 3.4N
Therefore, at the equator the normal force will be 3.4N less and at the North Pole = 980N.
Answer:
On Pluto, where the winter lasts for half of the nearly 250-year orbital period, temperatures undoubtedly do drop to such low values. On the Earth and other planets with an atmosphere, so-called greenhouse gases can trap part of the heat radiated by the surface, keeping the surface warmer.
Explanation:
