Which of the following is true for a displacement value? O path length
vector
measured in meters
straight line from start to end
vector
measured in meters
straight line from start to end
scalar
measured in meters
O path length
scalar
measured in meters

In a hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. how many unique charge-pairs are there (without double counting)?

How do you know how many valence electrons an atom has?

Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.