3. what is a tree growing from the energy it receives from the sun doing? a) it is taking advantage of energy flowing from low to high. b) it is taking advantage of energy flowing high to low. c) it is in violation of the law of the second law of thermodynamics.

Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?