Two flat rectangular mirrors are set edge to edge and placed perpendicular to a flat nonreflecting surface. the edges of the two mirrors meet at a 30° angle. a light ray that approaches mirror 1 is parallel to mirror 2. the angle of reflection of that ray from mirror 1 is:

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.)

What are the dimensions of the cross section that passes through the points a, f, g, and d?

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver