Heat/ specific heat problems
= aleeseah hammock
0.005 kg of copper was heated from 20°c to 80°c. how much energy was used to heat
cu? (specific heat capacity of cu is 385 j/kg °c)
m = 0.005kg
f =80°c
= 20°c
2= ?
= 385 5/kg°c

Iknow the first part it is the average star i am not 100% sure

Ke reqd to move from 0 to 50 will be proportional to 50x50 or 2500. this is equal to w.  to change vel from 50 to 150 you need energy prop to 22500 - 2500 = 20,000. this corresponds to 8w.  best answer is a) . work reqd is prop to velocity squared. 

A,d, and e on edgunuity

Answerdensity