True or false viruses need host cells to replicate

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees

Someone with these questions! pls 30 pts