The sun is stable because the force of gravity is balanced by the thermal pressure created by the reactions in its core. the sun will remain stable a) as long as the outer surface of the sun remains solid b) as long as there is a sufficient source of energy within the sun. c) as long a the planets continue orbiting the sun d) as long as the gravity of jupiter does not act on the sun

the amount of current in the coil

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s