The specific heat capacity of copper is 0.09 cal/g°c. how much energy is needed to flow into a 10-gram sample to change its temperature from 20°c to 21°c? 0.009 cal 0.09 cal 0.9 cal 9 cal

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5. click on edit profile.

6. there appears a option 'prefernces' and at that option at the right side , 'edit' is written.

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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