True or False 1. A capacitor with a higher relative permittivity would yield a greater capacitance.
2. a parallel plate capacitor that stores 3.0 coulombs of charge connected to a 1.2-V battery can produce a capacitance of 0.4 farads.
3. the relative permittivity of a dielectric material such as air is equal to 1.
4. the unit of farad can also be expressed in volts per coulomb.
5. a 2.0-farad capacitor connected to a 12.0 V battery can store a charge of 0.2 coulomb.
6. capacitance is directly proportional to the area but inversely proportional to the separation distance between plates.
7. more charges are stored in a capacitor of higher capacitance
8. the capacitance of a parallel plate capacitor having an area of 1.00 m squared that is separated by 0.0004 meters of air is 2.21 * 10^ {-8 } farads.​

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.

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db