You have a hose with a diameter of 9.0 cm from whose end the water leaves with a speed v. If a tube is connected to the end of the hose so that the water leaves with a speed of 3v, what must be the radius of the tube? The results of all problems must be expressed in SI units, unless the problem you indicate in other units

In 1923, the United States Army (there was no United States Air Force at that time) set a record for in-flight refueling of airplanes. Using two refueling planes, an Airco DH-4B biplane was able to remain in flight for 39 h. During the flight, the refueling planes were able to air-transfer a total of 687 gallons of fuel to the plane in 9 refueling transfers. Assume that the refueling nozzle had a diameter of 1.45 in and each refueling took 2.45 min to perform. Calculate the velocity of the fuel through the nozzle. Assume that the fuel filled the entire cross-sectional area of the nozzle. velocity: m/s

the drag force FD acting on a sphere moving through a fluid is given by the  FD=Kpv2  where K is a constant,            p is the density of the fluid             v is the speed of the space Determine the SI base units of K.

Read the volume of the liquid in the Erlenmeyer flask. Estimate the volume to the nearest 5 mL increment and enter it with the proper number of significant figures. volume: volume: ml Ű Read the volume of the liquid in the beaker. Estimate the volume to the nearest 5 mL increment and enter it with the proper number of significant figures. Show Transcribed Text mL 100 Ċ M 200 ml 150 30 100 50 100 50

Please help. This problem involves finding the radius and volume of a platinum atom using its density. Thank you.

What is the pressure of the gas in the cylinder, in kPa (kiloPascal)? h = 0.620 m, Pmercury = 13,600 kg/m3, 1.0 atm = 1.00 x 105 Pa = 100 kPa, and g = 10.0 m/s?. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. Mercury. p = 13,600 kg/m² Pen

A cube 7.81 cm on each side is made of a metal alloy. After you drill a cylindrical hole 1.62 cm in diameter all the way through and perpendicular to one face, you find that the cube has a mass of 0.56 kg. What is the density of this metal? Use π=3.14 . Express your answers in kgm3 and in whole numbers (NOT SCIENTIFIC NOTATION).

In 1923, the United States Army (there was no U.S. Air Force at that time) set a record for in-flight refueling of airplanes. Using two refueling planes, an Airco DH-4B biplane was able to remain in flight for 36 hours. During the flight, the refueling planes were able to air-transfer a total of 687 gallons of fuel to the plane in 9 refueling transfers. Assume that the refueling nozzle had a diameter of 1.65 inches and each refueling took 2.39 minutes to perform. Calculate the velocity of the fuel through the nozzle. Assume that the fuel filled the entire cross-sectional area of the nozzle.

The radius of the bronchial tube is increased by a factor of 2. The velocity of gas through it initially is 20 m/s. What is the velocity in the the swollen bronchial tube in m/s?

In 1923, the United States Army (there was no United States Air Force at that time) set a record for in-flight refueling of airplanes. Using two refueling planes, an Airco DH-4B biplane was able to remain in flight for 35 h. During the flight, the refueling planes were able to air-transfer a total of 687 gallons of fuel to the plane in 9 refueling transfers. Assume that the refueling nozzle had a diameter of 1.65 in and each refueling took 2.43 min to perform. Calculate the velocity of the fuel through the nozzle. Assume that the fuel filled the entire cross-sectional area of the nozzle. velocity: 12.94 m/s Incorrect