A 10 kg ball weighs 98 N in air and weighs 75 N when submerged in water. Determine the ball's apparent mass. Оа. 4.9kg O b. 7.5kg Ос. 9.8kg O d. 8.9kg O e. 5.7kg

1. A U-tube contains liquid of unknown density. An oil of density 780 kg/m³ is poured into one arm of the tube until the oil column is 11.5 cm high. The oil-air interface is then 5.0 cm above the liguid level in the other arm of the U-tube. Find the density of the liquid. kg/m3 0741 na741 na41na74na74 741 na741 na74 n741 na741 741 na741 na741 na7 0741 na741 n

Calculate the following Reynolds number for the cases:A. A 30 m whale swimming in water with a speed of 10 m/sB. A 1 um bacteria swimming at 30 um/s

A house weighs 12,000 pounds. a. Air normally has a density of 1.29 kg/m^3 but at 250 degrees air has a density of 0.9 kg/m^3. What volume of hot air balloon is needed to float this house off the ground? b. At standard temperature and pressure Helium has a density of 0.16 kg/m^3. How many 30 cm diameter helium balloons will it take to float the house?

A common way of salvaging cannons from old wrecks is to attach an inflatable balloon filed with air.  Assume that the cannon is a solid cylinder of iron which is 1.30m long with a radius 17.3cm.  The density of iron is 7.87g/cm^3. If an air bag were filled twice the volume necessary.   a. What volume of air bag wil be floating above the water surface?

A woman of m = 58 kg stands on the ice. The contact area between her skate and the ice is A = 0.0047 m2. a. Express the force that the person exerts on the ice, F, in terms of m and g. You do not need to include the force of the column of air above her.

1.

Suppose you spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.529 × 10-3 m³/s and the diameter of the nozzle you hold is 5.67 x 10-3 m. At what speed v does the water exit the nozzle? U = m/s

A hose can fill a 2.3 L container and 40 seconds. What is the velocity in m/s of the water as it leaves the 1.6 cm diameter nozzle?