if A and B are non zero vectors, is it possible for vector A×vector B and vector A. vector B both to be zero? Justify your answer

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

Ineed the answer to question 1 , i’m desperate

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.