Afluid is flowing through a circulat tube at 0.4 kg/s. tube inner surface is smooth with a diameter 0.014 m. fluid density is 990 kg/m^3, specific heat is 3,845 j/(kg-k), viscosity is 0.00079 ns/m^2, thermal conductivity is 0.74, and prandtl number is 8.6. a uniform heat flux of 71,297 w/m^2 is supplied to the flow from the surface. if the flow is fully developed, what is the convection coefficient in w/(m^2-k)

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

The items in the following list are all units of matter. which is the smallest unit that retains the properties of the matter? a.) atom b.) compound c.) electron d.) element

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.