Answer:
A) 11.28 x 10^(7) A.m²
B) 2.258 x 10^(17)A
Explanation:
A) The current density is given by the formula ;
J = nqv
Where n is the density of protons in the solar wind which is 12.5 cm³ or 12.5 x 10^(-6) m³
q is the proton charge which is 1.6 x 10^(-19) C
v is velocity which is 564km or 564000m
Thus, J = 12.5 x 10^(-6) x 1.6 x 10^(-19) x 564000 = 11.28 x 10^(7) A.m²
B) the formula for the total current the earth received is given as;
I = JA
The effective area is the cross section of the earth and thus,
Area = πr² where r is the radius of the earth given as: 6.371 x 10^(6)
A = π(6.371 x 10^(6)) ²
So I = 11.28 x 10^(7) x π(6.371 x 10^(6))² = 2.258 x 10^(17)A
Answer:
20 N
Explanation:
The question above is related to "Newton's Third Law of Motion." It states that <em>every action is being opposed by a reaction of equal size but different direction</em>.
The action force in the situation above is 20 N while the reaction force here is the one coming from the volleyball. So if the action force is <em>20 N </em>then it's a common sense that the reaction force is also<em> 20 N.</em>
Thus, <u>20 N is the amount of force that the volleyball is exerting on Ana.</u>
Answer:
All of them are examples of potential energy.
Explanation:
All of the following are examples of potential energy EXCEPT Imbalance in electrical charges of molecules across a cell membrane. O Both: chemical bond (C-H) in fatty acids AND concentration gradient. O Chemical bond (C-H) in fatty acids. O Concentration gradient. O All of them are examples of potential energy.
The gravitational field is the Force divided by the mass
Call g the gravitational fiel, F the force exerted by the earth and m the mass of the telescope.
g = F / m
g=9.1x10^4 N / 1.1 x 10^4 kg = 8.27 N/kg
Note that the unit N/kg is equivalent to m/s^2
Answer:
motion
Explanation:
when an object moves, it gains kinetic energy. so correct option in motion.
hope it helps!