How to find the coefficient of kinetic friction?

What is the temperature in degrees celsius of a substance with a tempature of 49k

Ascientist plants two rows of corn for experimentation.she put fertilizer on row 1 but does not put fertilizer on row 2 both rows receive the same amount of water and light intensity she checks the growth of the corn over 5 months what is the constant in this experiment

Meaning of a nonzero y-intercept to a graph of reaction distance versus speed