Similar to 3.10.16 in Rogawski/Adams. A road perpendicular to a highway leads to a farmhouse located 1 km away. An automobile travels past the farmhouse at a speed of 90 km/h. How fast is the distance between the automobile and the farmhouse increasing when the automobile is 3 km past the intersection of the highway and the road

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)

State the following: boyle's law and charle's law

What is the difference between mass density and weight density?