Convert 30 hours 40 minutes into seconds.

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 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

True or false: the revolution of the earth creates day and night as it rotates around the sun

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f