In a student experiment, a constant-volume gas thermometer is calibrated in dry ice (-78.5°c) and in boiling pentane (36.1°c). the separate pressures are 0.890 atm and 1.423 atm. hint: use the linear relationship p = a + bt, where a and b are constants.
a. what value of absolute zero does the calibration yield?
°c
b. what pressure would be found at the freezing point of water?
atm
c. what pressure would be found at the boiling point of water?
atm

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

We want to calculate the total metabolic heat generated by a singing canary taking into account heat transfer by radiation, convection and exhaling air. the air temperature is 20 oc, canary’s body internal and surface temperature is 33oc, external body surface convective heat transfer coefficient is 25.2 w/m2 .k, temperature difference between the inhaled and exhaled air is 4.3 oc, the ventilation rate is 0.74 cc of air per second, specific heat of air is 1.0066 kj/kg.k and density of air is 1.16 kg/m3 . assume the canary’s body to be a cylinder with 7 cm diameter and 9 cm length, and heat exchange is from the side as well as the top and bottom of cylinder. calculate 1) the net rate of heat lost by radiation, assuming heat gained by the bird through radiation from the surroundings is 11.5 w; 2) rate of heat transferred by convection to the surrounding air; 3) rate of heat transferred in the exhaling air without considering any internal evaporation; 4) total metabolic power.

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?