A 20-kg mass is attached to a spring with stiffness 200N/m. The damping constant for the system is 140N-sec/m. If the mass is pulled 25cm to the right of the equilibrium and gives an initial leftward velocity of 1m/sec, when will it first return to equilibrium position

Which of the following changes to a pipe would increase the conductance by a factor of 12? 1.quadrupling the length and tripling the radius.2.reducing the length by a factor of and doubling the radius.3.tripling the length and reducing the radius by a factor of .4.reducing the length but a factor of and doubling the radius.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Estimate the change in the gibbs energy and molar gibbs energy of 1.0dm3 of octane when the pressure acting on it is increased from 1.0 atm to 100 atm. the mass density of octane is 0.703 g cm−3