Consider a pig alone in a large barn exchanging thermal radiation with the inside walls of the barn. The surface area of the pig can be approximated as 2 m2 , with its skin temperature of 35°C and a skin emissivity of 0.90. The mean temperature of the inside walls of the barn is 10°C. (a) Calculate the net radiative heat exchange (loss) from the pig. (b) Calculate the thermal radiation emitted by the pig and explain the difference between it and what is calculated in part (a).

An atom that has fewer electrons that protons is called a positive ion.

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

Answerigneous bedrock of the oceanic crust;