The star betelgeuse has a large negative absolute magnitude and a large positive apparent magnitude. what does this mean? a. betelgeuse appears to be very bright, but actually is very dim. b. betelgeuse appears to be very dim, but is actually very bright. c. betelgeuse appears to be close to us, but is actually far away.

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)