what is the maximum rate at which the driver can decelerate and still avoid having the crate slide against the cab of the truck?

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.

To a of 4 x hz is 1. 0. mm nm nm

Why is the use of carbon-14 limited