a copper ball is dropped from a vertical height of 1200m. If the initial temp of copper ball at the height is 12°C, what is its temperature on reaching the ground? Assume all its kinetic energy changes to heat energy and sp heat capacity of copper is 400JKg-1°C-1 and g=10ms-2.
(The answer given is 54°c) plz help me to get the answer.
The correct one will be marked as brainliest.
31shivani:
plz give correct answers no nonsense answers plz
no need for ur answer
Answers
Answered by
0
Phase difference is the difference, expressed in degrees or time, between two waves having the same frequency and referenced to the same point in time. ... Time is sometimes used (instead of angle) to express position within the cycle of an oscillation.
Answered by
3
Kinetic energy of falling ball = Potential energy of the ball at the top.
Kinetic energy of falling ball = Heat energy produced in ball.
=> mgh = mc∆
=> gh = c∆
=> ∆ = (gh)/ c
=> ∆ = 10*1200/400
= 30° C
THE ANSWER "54°C IS WRONG"..
AND "30°C IS CORRECT"
Kinetic energy of falling ball = Heat energy produced in ball.
=> mgh = mc∆
=> gh = c∆
=> ∆ = (gh)/ c
=> ∆ = 10*1200/400
= 30° C
THE ANSWER "54°C IS WRONG"..
AND "30°C IS CORRECT"
Similar questions