According to the law of conservation of energy, what will most likely happen in a closed system?
b. energy will be exchanged, but matter will not be exchanged.
c. energy will be created along with matter.
d. energy will be destroyed, but matter will not be destroyed.

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.