A 3
When a solid sphere moves through a liquid, the liquid opposes the motion with a
force F. The magnitude of F depends on the coefficient of viscosity n of the liquid, the
radius r of the sphere and the speed of the sphere. Assuming that F is proportional to
different powers of these quantities, derive a formula for F using dimension analysis.
(8) ​

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

Difference between series and parallel circuits

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.