(I) In a radiator, antifreeze is made up of 73.7% ethylene glycol with a density of 0.8 g/cm^3 and 26.7% water. Find the density of the mixture if the percentages are in: (a) volume; (b) mass.? (Disregarding the fact that the volume of the mixture is? slightly less? than the sum of the starting volumes.)

(II) A human bone has a Young's modulus of approximately 10^10 N/m^2. It fractures when the compression strain is greater than 1.7%. What is the maximum load, in kilograms, that a bone with a cross-sectional area of ??2.7cm^2 can support?

(III) A cylindrical airship with a radius of 4.3 m and a length of 36 m is filled with helium at a pressure of 1 atm. The density of helium is 0.18kg/m^3. What maximum mass? (including its own? mass) can the airship? lift?

(IV) Water flows at 2.5 m/s through a garden hose with a diameter of 1.64 cm and exits through a spout with a radius of 0.66 cm. If the spout is pointing vertically upwards, how high does the water rise?

(V) The wing of an airplane has an area of ??81 m^2. The air flows at 207 m/s on the upper side and at 171 m/s under the wing. What is the modulus of the pressure force on the wing due to the Bernoulli effect?

pur-new-sol

Related Questions