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A hypodermic syringe is attached to a needle that has an internal radius of 0.303 mm and a length of 3.02 cm. The needle is filled with a solution of viscosity 2.02 10-3 Pa · s; it is injected into a vein at a gauge pressure of 16.1 mm Hg. Ignore the extra pressure required to accelerate the fluid from the syringe into the entrance of the needle.
(a) What must the pressure of the fluid in the syringe be in order to inject the solution at a rate of 0.253 mL/s?
(b) What force must be applied to the plunger, which has an area of 1.04 cm2?
What is the ratio of the dynamic viscosity of air to that of water at standard pressure and a temperature of 20?C? Find the ratio of the kinematic viscosity of air to that of water for the same condition?
Two radio antennas are separated by 1.20m. Both broadcast identical 750 MHz waves. If you walk around the antennas in a circle of radius 20m, how many maxima will you detect.
Here is the data found: This is OHM'S LAW experiment Trial Voltage Current Resistance, What is the uncertainty of this measurement
A wooden raft has a mass of 69 kg. When empty it floats in water (density 1000 kg/m3) with 25% of its volume submerged. What mass of sand can be put on the raft
The crankshaft in a race car goes from rest to 3360rpm in 2.0s . What is the crankshaft's angular acceleration
Density is the ratio of an object;s mass to its volume. Would you except density to be a vector or a sdcalar quanity? Explain.
A toy of mass 0.155 kg is undergoing SHM on the end of a horizontal spring with forces constant 305 N/m. When object is a distance 1.20×10-2 m from its equilibrium position, it is observed to have the speed of 0.255 m/s.
To make a simple microscope a student places two converging lenses of +20 D at opposite ends of a 34 cm long tube. What is the tube length of the microscope
The atmosphere on Mars is almost all carbon dioxide (CO2), and has a pressure of about 6.9×102 Pa, what is the mass of one cubic meter of the atmosphere
Multiple-Concept Example 1 discusses the concepts that are relevant to this problem. obtain the rise in its temperature
A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of +16.6 m/s in a time of 34.3 s, What is the tension in the hitch that connects the trailer to the car
A student eats a candy bar that may give 1.8 * 10^6 joules of energy. if the student has a mass of 60 kg, how high will he have a climb a ladder to offset completely the energy contained in the candy bar.
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