Afirewalker runs across a bed of hot coals without sustaining burns. calculate the heat transferred by conduction into the sole of one foot of a firewalker given that the bottom of the foot is a 3.00-mm-thick callus with a conductivity at the low end of the range for wood and its density is 300kg/m3 . the area of contact is 25.0cm2, the temperature of the coals is 700°c , and the time in contact is 1.00 s. ignore the evaporative cooling of sweat.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

c) up is the direction the magnetic force is acting on the charge.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

the components of a vector are the parts of the vectors that are to each other.

b perpendicular