in an avalanche a large amount of the snow slide down a hill. what energy coversion takes place durning an avalanche

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?