An experiment was carried out to measure the density of air using a thick walled bottle fitted with a tap the following results were obtained mass of the bottle countain air=410 bottle of avacuated =509g
mass of bottle with water=1150g the density of water is 1g per cm

what mass of water was needed to fill the bottle

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?

Anthropology is the study of the effects of disease on the body, while forensic anthropology studies the disease of crime a.) true b.) false