A 235-g sample of a substance is heated to 330 °C and then plunged into a 105-g aluminum
calorimeter cup containing 195 g of water and a
17-g glass thermometer at 12.5°C. The final
temperature is 35.0°C. The value of specific heat
for aluminium is 900 J/kg. C for glass is
840 J/kg. Cand for water is 4186 J/kg.
Part A
What is the specific heat of the substance? (Assume no water boils away)
Express your answer using three significant figures.

i dont think you are wrong for wanting to get even with someone who did you wrong.

(i'm an eye for an eye kind of person) but if this person hurt you in a sexual way, i dont suggest doing anything to him. he should be taken to the proper authorities, you could go to jail depending on what you do. if it was something small like your sibling took your spot on the couch, than yea, i would get even with him by taking one of his favorite snacks lol. but i dont suggest you doing anything illegal.

b.a device that inputs heat into a cool object

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