For the human body, what is the rate of heat transfer by conduction through the bodys tissue with the following conditions: the tissue thickness is 3.00 cm, the change in temperature is 2.00C , and the skin area is 1.50 m2 . How does this compare with the average heat transfer rate to the body resulting from an energy intake of about 2400 kcal per day? (No exercise is included.)

Physics 1500 – Dr. Hebert Week of August 21, 2016 Free Fall Motion If I hold an apple at some height and let it go, what happens If I throw an apple straight up, what happens Freely falling objects – objects moving under only the influence of gravity o Take the acceleration du2 to gravity as a constant a = g = 9.8 m/s o can use the kinematic equations to describe motion the acceleration due to gravity always points toward the surface of the Earth 3 cases of free fall motion – dropping the ball, throwing the ball up, throwing the ball down exa mpl e problem Kinematic equations do NOT depend at all on mass of the object This means, neglecting air resistance, two objects should fall at the same rate regardless of their respective masses o Apollo 15 tested this on the moon Vectors Acceleration, velocity, and displacement are all vectors In one dimension, dealing with vectors is easy: one way is positive, and the other is negative Two dimensions is more difficult Two vectors are equal if they have the same direction and the same magnitude Vectors don’t care where they are, just magnitude