Two copper balls of masses m0 and 4m0 are heated so that both balls receive the same amount of heat.
December 21, 2020 | education
| Two copper balls of masses m0 and 4m0 are heated so that both balls receive the same amount of heat. At the same time, the large ball warmed up by 5 ° C. How hot was the smaller ball? How much heat is released when 4 m3 of ice is cooled from 10 ° C to –40 ° C?
Given:
Q1 = Q2
m1 = m0
m2 = 4m0
t2 = 4
t1 =?
Decision:
Q = cm [t]
Q1 = cm0t
Q2 = c4m0 * 5
Q1 / Q2 = cmt1 / c4m * 5
t1 = 4 * 5 = 20
Answer: a ball with a smaller mass warmed up by 20 degrees Celsius
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.