i need the answer quickly Determine the speed with which the erythrocyte should move evenly with the observederythrocyte sedimentation reaction. Consider the erythrocyte as a ball with a diameter of 9.6um. The density of the erythrocyte is 2.1 kg/m3, the density of blood plasma is 8.9 kg/m3. Theviscosity of the blood plasma is 4.8 mPa s. Neglect the electrostatic expansion and magneticproperties of erythrocytes. Gravitational acceleration is taken equal to 10 m/s2. Give youranswer in mm / hour.Answer:

Given: Density of erythrocyte = σ = 2.1 kg/m3 Radius of erythrocyte = r = 9.6 μm = 9.6×10-6 m…

Answered: Determine the speed with which the…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 48P: A strip of copper is placed in a uniform magnetic field of magnitude 2.5 T. The Hall electric field...

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A proton precesses with a frequency p in the presence of a magnetic field. If the intensity of the magnetic field is doubled, what happens to the precessional frequency?
A strip of copper is placed in a uniform magnetic field of magnitude 2.5 T. The Hall electric field is measured to be 1.5103V/m (a) What is the drift speed of the conduction electrons? (b) Assuming that n =8.01028 elections per cubic meter and that the cross-sectional area of the strip is 5.0106m2 , calculate the current in the ship, (c) What is the Hall coefficient 1/nq?
A mass spectrometer (Fig. 30.40, page 956) operates with a uniform magnetic field of 20.0 mT and an electric field of 4.00 103 V/m in the velocity selector. What is the radius of the semicircular path of a doubly ionized alpha particle (ma = 6.64 1027 kg)?
Assume the region to the right of a certain plane contains a uniform magnetic field of magnitude 1.00 mT and the field is zero in the region to the left of the plane as shown in Figure P22.71. An electron, originally traveling perpendicular to the boundary plane, passes into the region of the field. (a) Determine the time interval required for the electron to leave the field-filled region, noting that the electrons path is a semicircle. (b) Assuming the maximum depth of penetration into the field is 2.00 cm, find the kinetic energy of the electron.
Is B constant in magnitude for points that lie on a magnetic field line?
A proton, with mass 1.67 × 10-27kg and charge +1.6 × 10-19C, is sent with velocity 7.1 × 104 m/s in the +x direction into a region where there is a uniform electric field of magnitude 730 V/m in the +y What are the magnitude and direction of the uniform magnetic field in the region, if the proton is to pass through undeflected? Assume that the magnetic field has no x-component and neglect gravitational effects. (Answer: 0.010 T, +z direction)
The strengths of the fields in the velocity selector of a Bainbridge mass spectrometer are B = 0.500 T and E = 1.2 × 105 V/m, and the strength of the magnetic field that separates the ions is Bo = 0.750 T. A stream of singly charged Li ions is found to bend in a circular arc of radius 2.32 cm. What is the mass of the Li ions?
In an experiment designed to measure the Earth’s magnetic field using the Hall effect, a copper bar 0.500 cm thick is positioned along an east-west direction. Assume it n = 8.46 × 1028 electrons/m3 and the plane of the bar is rotated to be perpendicular to the direction of → B. If a current of 8.00 A in the conductor results in a Hall voltage of 5.10 × 10–12 V, what is the magnitude of the Earth’s magnetic field at this location?
A mass spectrometer is used to examine the isotopes of uranium. Ions in the beam emerge from a velocity selector at a speed of 3.00 x 105 m/s and enter a uniform magnetic field of 0.375 T directed perpendicularly to the velocity of the ions. What is the distance between the impact points formed on the photographic plate by ions of 235U and 238U? The mass of a 235U ion is 3.902 x 10-25 kg, and the mass of a 238U ion is 3.952 x 10-25 kg, while both types have a charge of 1.602 x 10-19 C. A mass spectrometer (schematic). Charged particles are first sent through a velocity selector. They then enter a region where a magnetic field B causes positive ions to move in a semicircular path and strike a photographic film at P.
In the previous question, the proton's speed is 7.8 m/s, and the uniform magnetic field has a strength of 0.026 T, the radius of the proton's path is ______________ m. Exponent format with 3 SF.
To see why an MRI utilizes iron to increase the magnetic field created by a coil, calculate the current needed in a 400-loop-per-meter circular coil 0.660 m in radius to create a 1.20-T field (typical of an MRI instrument) at its center with no iron present. The magnetic field of a proton is approximatelylike that of a circular current loop 0.650×10−15 m in radius carrying 1.05×104 A . What is the field at the center of such a loop?
An isotope of hydrogen (q= e) passes through a velocity selector that allows particles with a velocity of 6.0 x 105 m/s to pass through. These particles enter a mass spectrometer that has an applied magnetic field of 0.494 T, moving at right angles to the field and following a circular path with radius 3.80 cm. Determine the mass of the ion particles

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