a sound wave travels to a high wall is 225m away from the source and is then reflected back. If the speed of sound in air is 340m. s¹, calculate the time it takes to hear the echo​

car a and b are moving in opposite directions

plz mark.me the brainliest i rlly need this kind of yours in exchange

speed

ratio of distance traveled to time interval

net force

vector sum of forces on object

object

source of diverging light rays either luminous or illuminated

don't remove my answer im trying my best to answer them

explanation:

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.  

i think its d if wrong im sorry