Based on the information in the chart, what is the best way to tell samples of tin and aluminum apart?

A. Look at their appearances

B. Test their electrical conductivity

C. Measure their densities

D. Determine their state at room temperature

C. Measure their densities

Explanation:

I took the quiz ap3x

multiply 2kg by latent heat of vap

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