Answer:
+3 in Atom, +9 in Nucleus
Explanation:
Charge of atom:
Neutrons are neutral in charge therefore ignore those for this portion,
there are 9 protons (+) and 6 electrons (-).
9 - 6 = +3 charge in atom
Charge of nucleus:
Neutrons are neutral as said before, there are 9 protons (+) and 6 neutrons (0).
9 + 0 = +9 charge in atom
the Doppler effect. (I don't know how to explain it lol)
Answer:
G. It will take twice as long.
Explanation:
Let's call
the original speed of the plane and
the distance between Dallas and Pensacola. The time the plane originally takes to complete the flight is

In this problem, we are told that the plane encounters wind moving at half of its speed:
, in the opposite direction. This means that the new speed of the plane is

And so, the time the plane takes now to complete the flight is

So, the plane takes twice the time as before.
Answer:
Orbital speed=8102.39m/s
Time period=2935.98seconds
Explanation:
For the satellite to be in a stable orbit at a height, h, its centripetal acceleration V2R+h must equal the acceleration due to gravity at that distance from the center of the earth g(R2(R+h)2)
V2R+h=g(R2(R+h)2)
V=√g(R2R+h)
V= sqrt(9.8 × (6371000)^2/(6371000+360000)
V= sqrt(9.8× (4.059×10^13/6731000)
V=sqrt(65648789.18)
V= 8102.39m/s
Time period ,T= sqrt(4× pi×R^3)/(G× Mcentral)
T= sqrt(4×3.142×(6.47×10^6)^3/(6.673×10^-11)×(5.98×10^24)
T=sqrt(3.40×10^21)/ (3.99×10^14)
T= sqrt(0.862×10^7)
T= 2935.98seconds
Explanation:
Q = mc∆T
= (0.34 kg)(94 J/kg-°C)(25°C)
= 799 J