Ajar can hold 60 mL of liquid. It is 10 cm high and 2 cm wide. The length of the jar is:
3 cm
20 cm
120 cm
1,200 cm

3cm

Explanation:

From the question, we obtained the following:

Volume = 60mL = 60cm^3

Height = 10cm

Width = 2m

Length =?

Volume = length x width x height

Length = volume / width x height

Length = 60/(2 x 10) = 60/ 20

Length = 3cm

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

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