4. Forces contribute to the net force on a car rolling down a ramp.
a. Which force supports the car's weight?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

J. j. thomson’s experiment disproved the theory that an atom

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.)