An 100-g piece of copper, initially at 295°C, is dropped into 250 g of water contained in a 300-g aluminum calorimeter; the water and calorimeter are initially at 10.0°C. What is the final temperature of the system? (Specific heats of copper and aluminum are 0.0920 and 0.215 cal/g•°C, respectively. cw = 1.00 cal/g•°C)
a. 12.8°C
c. 18.1°C
b. 16.5°C
d. 32.1°C
C
You might also like to view...
How much current will be flowing through a 40.0 m length of cylindrical metal wire with radius 0.0 mm if it is connected to a source supplying 16.0 V? The resistivity of this metal is 1.68 × 10-8 ? ? m
A) 1200 A B) 9.5 × 108 A C) 68 nA D) 710 A
What is the ratio of the light-gathering power of a telescope with a primary lens of diameter 10 m to a telescope with a primary lens of diameter 1 m?
A) 10 to 1 B) 1 to 10 C) 100 to 1 D) 1 to 100
A 3.00 kg mass and a 4.00 kg mass are released simultaneously. What is the velocity of the center of mass at t = 10 s (ignore air resistance)?
A. 9.8 m/s B. 7.0 m/s C. 70 m/s D. 98 m/s
In 20 minutes, Kara ran 2.40 km on a treadmill facing due east. Relative to the gym, what were her displacement and average velocity during this time interval?
A. 0; 0 B. 0; 2.00 m/s C. 2.40 km, east; 0 D. 2.40 km, east; 2.00 m/s, east E. 2.40 km, west; 2.00 m/s, west