200 g of ice at 0C is dropped into a calorimeter of negligible heat capacity containing 350 g of water at 20C. What is the temperature of the system when it reaches equilibrium? The latent heat of fusion of water is 80 cal/g.
A)
0C
B)
24C
C)
-13C
D)
13C
E)
-24C
Question 2
A torsion pendulum consists of a uniform rod hanging horizontally from thin wire tied to its center.
When the wire is twisted through an angle , the wire exerts a torque = -, where = 0.0016 Nm/rad. The rod has a mass of 35 grams and is 10 cm long. What is the period of the torsional oscillations of the pendulum?
A)
0.85 s
B)
1.4 s
C)
0.99 s
D)
2.1 s
E)
0.023 s
The four ways in which animals exchange heat with the environment are radiation, evaporation, convec
There are multiple pathways for heat exchange between organisms and the environment.
Masseuse Performs Massage of the Shoulder Under Heat Lamp, c. 1925.
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