Asheet of red paper will look black when illuminated with
a. cyan light.
b. yellow light.
c. red light.
d. magenta light.
e. none of the above

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

It is really hard for me right know

Should we celebrate the voyages of zheng he mini q answer key