A spherical mass M is held fixed in deep space, well away from the earth's gravitational pull. A second mass m is released from rest at a distance r0 from M and begins to move toward M with an initial acceleration a0. In terms of a0, what is m's acceleration when the two masses are only r0/16 apart

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.)