Do dwarf planets has several other bodies in their path orbiting the Sun just as they do?

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

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?