A red blood cell typically carries an excess charge of about -2.5 × 10-12 C distributed uniformly over its surface. The red blood cells can be modeled as spheres approximately 7.6 µm in diameter and with a mass of 9.0 × 10-14 kg. How many excess electrons does a typical red blood cell have? excess electrons: electrons Does the mass of the extra electrons appreciably affect the mass of the cell? To find out, calculate the ratio of the mass of the extra electrons to the mass of the cell without the excess charge. ratio: What is the surface charge density on the red blood cell? Express your answer in units of C/m2 and electrons/m2. surface change density: C/m? surface charge density: electrons/m2

A red blood cell typically carries an excess charge of about -2.5 × 10-12 C distributed uniformly over its surface. The red blood cells can be modeled as spheres approximately 7.6 µm in diameter and with a mass of 9.0 × 10-14 kg. How many excess electrons does a typical red blood cell have? excess electrons: electrons Does the mass of the extra electrons appreciably affect the mass of the cell? To find out, calculate the ratio of the mass of the extra electrons to the mass of the cell without the excess charge. ratio: What is the surface charge density on the red blood cell? Express your answer in units of C/m2 and electrons/m2. surface change density: C/m? surface charge density: electrons/m2

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter43: Nuclear Physics

Section: Chapter Questions

Problem 3P

See similar textbooks

Similar questions

(a) If the position of an electron in a membrane is measured to an accuracy of 1.00 m, what is the electron's minimum uncertainty in velocity? (b) If the electron has this velocity, what is its kinetic energy in eV? (c) What are the implications of this energy, comparing it to typical molecular binding energies?
Calculate the speed of (a) an electron and (b) a proton with a kinetic energy of 1.00 electron volt (eV). (c) Calculate the average translational kinetic energy in cV of a 3.00 102 K ideal gas particle. (Recall from Topic 10 that 12mv2 = 32kBT.)
An alpha particle is whizzing by at a velocity determined by its KE of 5 Mev. a ) What is the velocity of the alpha particle? b) What is the magnetic field at the position of a nucleus 2nm away from the alpha particle at angle of 900 to the velocity of the alpha. Alpha particle has charge of 2e but mass of 4 protons.
Two small sphere spaced 20.0 cm apart have equal charge. How many excesselectrons must be present on each sphere if the magnitude of the force ofrepulsion between them is 4.57x10 -21 N?
A particle passes through a mass spectrometer as illustratedin Figure P19.15. The electric field between the plates ofthe velocity selector has a magnitude of 8 250 V/m, and themagnetic fields in both the velocity selector and the deflectionchamber have magnitudes of 0.093 1 T. In the deflectionchamber the particle strikes a photographic plate 39.6 cmremoved from its exit point after traveling in a semicircle.(a) What is the mass - to - charge ratio of the particle? (b) Whatis the mass of the particle if it is doubly ionized? (c) What isits identity, assuming it’s an element?
In Millikan's oil-drop experiment, one looks at a small oil drop held motionless between two plates. Take the voltage between the plates to be 2370 V, and the plate separation to be 2.33 cm. The oil drop (of density 0.810 g/cm3) has a diameter of 4.35 ✕ 10−6 m. Find the charge (in C) on the drop.
Chase and Kadri consider the following values, which are part of a set of experimental data for a Millikan oil-droplet experiment. b = 1.48 ✕ 10−10 kg/sd = 0.016 m?oil − ?air = 0.882 g/cm3r = 3.0 ✕ 10−7 mV = 5000 V What is the terminal speed for a droplet of charge 4e?To what value should the voltage be adjusted so that the droplet is suspended between the two plates? V
Suppose a helium atom is stripped of its electrons and accelerated to 2.00% of the speed of light. (a) Compute its energy in electronvolts. (b) What potential difference must it move across to acquire this energy?
In an experiment replicating Millikan’s oil drop experiment, apair of parallel plates are placed 0.0200 m apart and the top plate is positive.When the potential difference across the plates is 240.0 V, an oil drop of mass2.0 × 10-11 kg gets suspended between the plates. (e = 1.6 × 10-19 C)a. Draw a free body diagram to describe the situation.b. What is the charge on the oil drop?c. Is there an excess or deficit of electrons on the oil drop? How many electrons are in excess or deficit?
Suppose a cyclotron is operated at an oscillator frequency of 12 MHz (Mega-Hertz) and has a radius of R=53 cm. A deuteron is the nucleus of deuterium, an isotope of hydrogen, consisting of a proton and a neutron, and therefore having the same charge as a proton is to be accelerated in the cyclotron. Its mass, m=3.24 x10-27 kg. What is the resulting kinetic energy of the deuteron?
The beam of electrons goes undeflected when passing through crossed electric and magnetic fields of magnitude 6x104 V/m and 1x10-3 T, respectively. What is the radius of the electron orbit, in mm, if the electric field is turned off? Give your answer to 2 decimals.
Given u = −7i − 5j and v = −10i − 9j, what is projvu? a −9.937i − 8.943j b −6.956i − 4.968j c −6.354i − 5.718j d −4.448i − 3.177j