Questions from College Physics

Q: A certain fluid has a density of 1080 kg/m3 and

A certain fluid has a density of 1080 kg/m3 and is observed to rise to a height of 2.1 cm in a 1.0-mm-diameter tube. The contact angle between the wall and the fluid is zero. Calculate the surface ten...

Q: Whole blood has a surface tension of 0.058 N/

Whole blood has a surface tension of 0.058 N/m and a density of 1050 kg/m3. To what height can whole blood rise in a capillary blood vessel that has a radius of 2.0 x 10-6 m if the contact angle is ze...

Q: The block of ice (temperature 0°C) shown in

The block of ice (temperature 0°C) shown in Figure P9.53 is drawn over a level surface lubricated by a layer of water 0.10 mm thick. Determine the magnitude of the force F( needed to pull t...

Q: A thin 1.5-mm coating of glycerine has been

A thin 1.5-mm coating of glycerine has been placed between two microscope slides of width 1.0 cm and length 4.0 cm. Find the force required to pull one of the microscope slides at a constant speed of...

Q: A straight horizontal pipe with a diameter of 1.0 cm

A straight horizontal pipe with a diameter of 1.0 cm and a length of 50 m carries oil with a coefficient of viscosity of 0.12 N · s/m2. At the output of the pipe, the flow rate is 8.6 x 10-5 m3/s and...

Q: The pulmonary artery, which connects the heart to the lungs,

The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.6 mm and is 8.4 cm long. If the pressure drop between the heart and lungs is 400 Pa, what is the average speed of...

Q: Spherical particles of a protein of density 1.8 g/

Spherical particles of a protein of density 1.8 g/cm3 are shaken up in a solution of 20°C water. The solution is allowed to stand for 1.0 h. If the depth of water in the tube is 5.0 cm, find the radiu...

Q: A hypodermic needle is 3.0 cm in length and 0

A hypodermic needle is 3.0 cm in length and 0.30 mm in diameter. What pressure difference between the input and output of the needle is required so that the flow rate of water through it will be 1 g/s...

Q: What radius needle should be used to inject a volume of 500

What radius needle should be used to inject a volume of 500. cm3 of a solution into a patient in 30.0 min? Assume the length of the needle is 2.5 cm and the solution is elevated 1.0 m above the point...

Q: The aorta in humans has a diameter of about 2.0

The aorta in humans has a diameter of about 2.0 cm, and at certain times the blood speed through it is about 55 cm/s. Is the blood flow turbulent? The density of whole blood is 1050 kg/m3, and its coe...