How much energy is imparted to one cell during one day’s treatment? Assume that the specific gravity of the tumor is 1 and that 1 J = 6 * 1018 eV. (a) 120 keV; (b) 12 MeV; (c) 120 MeV; (d) 120 * 103 MeV.
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How much energy is imparted to one cell during one day’s treatment? Assume that the specific gravity of the tumor is 1 and that 1 J = 6 * 1018 eV. (a) 120 keV; (b) 12 MeV; (c) 120 MeV; (d) 120 * 103 MeV.
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- 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? VIn 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 2033 V, and the plate separation to be 2.00 cm. The oil drop (of density 0.81 g/cm3) has a diameter of 4.0 X 10-6 m. Find the charge on the drop, in terms of electron units.4. What fraction of 5.00 MeV a particles will be scattered through angles greater than 8.00° from a gold foil (Z = 79, density = 19.3 g/cm³) of thickness 10-8 m?
- Calculate the thickness of aluminium foil that is needed to stop the electrons with an energy of 9 joules, knowing that the density of aluminium is 2.7 kg/m^3The ionization potential of a helium atom is 24.5 V. Determine the work of ionization.Please explain how FAB, FAC and N were solved from the equations.
- Prove that the energy difference when an electron travels from orbit 1 to orbit 2 is given by relationship me* AE12 327 8hn N5 -TEFind the fraction of 7.7-MeV α particles that is deflected at an angle of 90° or more from a gold foil of 10 -6 m thickness.In the Millikan oil drop experiment tiny charged oil droplets generated by a spray are allowed to fall under gravity through a hole in a top electrode, T, towards a bottom electrode B separated from T by 1 cm. When a holding voltage Vh = +0.25V is applied between T and B the droplets are seen to be suspended motionless between the electrodes. What is the specific charge of the droplet q/m?
- What two pieces of evidence allowed the first calculation of me , the mass of the electron?(a) The ratios qe / me and q p / m p .(b) The values of qe and EB .(c) The ratio qe / me and qe .Justify your response.When adhesive tape is pulled froma dispenser, the detached tape acquires a positive charge and theremaining tape in the dispenser acquires a negative charge. If thetape pulled from the dispenser has 0.14 mC of charge per centimeter, what length of tape must be pulled to transfer 1.8 * 1013electrons to the remaining tape?An electron with 2.2 eVeV of kinetic energy collides with an atom whose energy-level diagram is shown in (Figure 1). The electron kicks the atom into an excited state. What is the electron's kinetic energy after the collision? ANSWER IN EV