How large (volume) would a balloon filled with helium need to be in order to lift a 100kg man? The density of helium is ρHe=0.164kg/m3. The density of air is ρair=1.29kg/m3. The mass of the balloon is negligible.

You are making banana bread and the recipe calls for 3/4 cup of vegetable oil and one egg yolk. You measure out your oil in a measuring cup and then just toss the egg yolk into the oil before mixing with the dry ingredients. The egg yolk has a mass of 9.9 grams and floats with 71 % of its volume under the surface of the oil. You also know that the density of the oil is Poil 0.95 cm³ What volume of oil is displaced by the egg yolk? cm3 What is the total volume of the egg yolk? cm³ What is the density of the egg yolk? g cm3 Imagine the egg yolk was floating in a salt-water solution instead (Pwater = 1.04 % .). What percentage of the yolk would be submerged in water? cm³

If the average volume flow of blood through the aorta is 8.50 × 10−5 m3/s and the cross-sectional area of the aorta is 3.00 × 10−4 m2, what is the average speed of blood in the aorta?

A manometer containing water with one end connected to a container of gas has a column height difference of  h = 0.27 m  (see figure below). If the atmospheric pressure on the right column is 1.01 ✕ 105 Pa, find the absolute pressure of the gas in the container. The density of water is 1.0 ✕ 103 kg/m3. Pa

The density of a composite is 1.7 g/cm3. The density of an unknown fluid is 2.2 g/cm3. An object made of the composite will _____ in the unknown fluid.

A chemical in a measuring cylinder exerts a pressure of 2.66 x 104 Pa at a depth of 20.0 cm. If the value of g is 9.8 N/kg, the density of the chemical is Select... kg/m³. 201 =90

Air enclosed in a sphere has density ρ = 1.4 kg/m3. What will the density be if the radius of the sphere is halved, compressing the air within?

The systolic pressure of a patient is 110 mmHg and the diastolic pressure is 60 mmHg. Given that 760 mmHg is equivalent to 101.3 kPa, what is the systolic and diastolic blood pressure of this patient in units of Pascals?

Mercury is poured into a U-tube as shown in Figure a. The left arm of the tube has cross-sectional area A, of 9.8 cm², and the right arm has a cross-sectional area A, of 5.50 cm². Two hundred gra 8 ст of water are then poured into the right arm as shown in Figure b. Water A1 Ag A1 Mercury Densities: Mercury 13.6 g/cm³, Water 1.0 g/cm³ (a) Determine the length of the water column in the right arm of the U-tube. cm (b) What distance h does the mercury rise in the left arm? cm. (c) In figure b, at the level of the dashed line, which side of the u-tube has larger pressure? O Mecure side Water side Same

Blood pressure is normally taken on the upper arm at the level of the heart. Suppose, however, that a patient has his arms in a cast, so you cannot take his blood pressure in the usual way. If you have him stand up and take the blood pressure at his calf, which is 87.5 cm below his heart, what would be the Ap = mmHg magnitude Ap of the difference between this measurement of blood pressure and a normal blood-pressure measurement? The density of blood is 1060 kg/m³. Is the blood pressure measured at the calf larger or smaller than the blood pressure measured at the upper arm? O larger smaller