The meter was redefined as a reference to earth, then to krypton, and finally to the speed of light. why do you think the reference point for a meter continued to change?

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )