If the primary power source at the local hospital has a reliability of 0.98 and the redundant backup generator has a reliability of 0.97, what is the likelihood of a power FAILURE at the hospital

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire

What is the difference between mass density and weight density?