Explanation:
Given that,
Altitude 
We need to calculate the radius
Where, R = radius of the earth
h = radius of altitude
Put the value into the formula
(a). We need to calculate the period of the orbit,
Using formula of period
(b). We need to calculate the speed of the satellite
Using formula of speed
Put the value into the formula
(c). We need to calculate the acceleration of the satellite
Using formula of acceleration
Put the value into the formula
Hence, This is the required solution.
That it will erupt upon contact. Hope it helps!
Answer:
D) 11 N
Explanation:
F = mg
In the vertical
30 = m(9.8)
m = 3.06 kg
in the horizontal
F = ma
F(unknown) - 5 = 3.06(2.0)
F(unknown) = 11.12... N
It is due to the excess stress.
Answer: Larmor suggested in 1919 that a self-exciting dynamo could explain the magnetic field of the earth, as well as that of the sun and other stars, but it was Elsasser and Bullard in the 1940s who showed how motion in the liquid core of the earth might produce a self-sustaining magnetic field. By this time seismology and other studies had given a clearer picture of the earth, as having a solid inner core, a liquid outer core, both with a composition more of metal (mainly iron) than rock, and a rocky mantle, all below a thin crust that is all we can directly see. Energy from radioactivity travels outwards as heat, producing thermal convection in the core. It seems that this convection is the cause of the earth's magnetic field, although our knowledge of the core and its dynamics is sketchy. Our knowledge is limited to saying that flow regimes like those that may be occurring in the core can produce self-sustaining dynamos, with characteristics similar to that needed to produce the earth’s magnetic field.
Explanation:
