Three light bulbs, A, B, and C, have electrical ratings as follows: Bulb A - 96 W, 1.7 A Bulb B - 80 V, 205 W Bulb C - 120 V, 0.4 A The three bulbs are connected in a circuit, which is across a 150-V line, as shown. Assume the filament resistances of the light bulbs are constant and independent of operating conditions. In Figure 19.12, the equivalent resistance is equal to…

ice to water 1 water to vapour 2 latent heat

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