I need this asap thank you :) pl When the spring on a mousetrap car is fully unwound, the force acting on the car is . a. the combination of friction and the force of the lever arm pulling on the axle

b. equal to the input force of the spring

c. only friction

d. gone

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length