lab 10; Apr 16 — buoyancy

Lab #10
Archimedes’ Principle and
Physics 111 Specific Heat Capacity Name:
2. [32 pts total] Specific heat capacity ‘c’: Q=mcΔT. In this part of the lab, you will put a heated
unknown material in a water-filled container and measure its heat capacity.
[6 pts] Initial Data (before adding hot unknown)
Mass of empty aluminum container
Mass of container filled ¾ full with water
Initial temperature of water and container
Take your unknown from the hot water and quickly place it in your container.
[6 pts] Final Data (after adding hot unknown)
Temperature of hot unknown in boiling water
Final temperature of water, container and unknown
(after placing unknown in water and T has stabilized)
Mass of unknown (after removal from container)
A. Calculate the following, showing your work clearly.
a. [4 pts] Find the magnitude of the heat energy gained by your water.
b. [4 pts] Find the magnitude of the heat energy gained by the inner aluminum container.
c. [4 pts] Calculate the magnitude of the heat energy lost by the unknown.
d. d[4 pts] Calculate the specific heat of the unknown material.
e. [4 pts] Identify your material from a table of specific heats. And no, appearance (color) alone
isn’t sufficient. Check your numbers with a staff member.
Archimedes’ Principle and Specific Heat Capacity–2