Electrons striking the back of a conventional TV screen travel at a speed of about 1.4 ✕ 107 m/s. What is their de Broglie wavelength (in nm)?
Electrons striking the back of a conventional TV screen travel at a speed of about 1.4...
please help me to solve problems 1,2,3,5.
PROBLEMS - Find the energy of a photon with a frequency of 1 X 1016 Hz. 2. Things around you are emitting infrared radiation that includes the wavelength 9.9 x 10-6 m. What is the energy of these IR photons? 3. In what part of the EM spectrum would a photon of energy 9.5 X 10-25 J be found? What is its energy in electronvolts? 4. Gamma rays (y-rays) are high-energy photons. In...
Consider electrons of kinetic energy 5.29 eV and 529 keV. For each electron, find the de Broglie wavelength (in nm), particle speed (in m/s), phase velocity (speed, in m/s), and group velocity (speed, in m/s). nm 5.29 eV electron de Broglie wavelength particle speed phase velocity group velocity m/s m/s m/s 529 keV electron nm de Broglie wavelength particle speed phase velocity group velocity m/s m/s m/s
In a computer monitor, electrons approach the screen at 1.20 × 108 m/s. What is the de Broglie wavelength of these electrons? Note: the mass of electrons is 9.109 × 10–31 kg; and use the relativistic momentum in your calculation. The answer is 5.56e-12 m but how?
( ulat will eject electrons (i.e. the kinetic energy of the electrons after ejection is equal zero)? 4 (3pt) Calculate the de Broglie wavelength for the following: a. An electron moving at 5.31 x 106 m/s. b. A baseball thrown at a speed of 97 mph. The mass of this baseball is approximately 145 grams. c. A 175 lbs human being running at a speed of 2.2 km/hr. d. How does the de Broglie wavelength of the electron differ from...
What is the de Broglie wavelength of a 162 g baseball with a speed of 38.0 m/s ? (in m) What is the speed of a 162 g baseball with a de Broglie wavelength of 0.230 nm ? (in m/s)
The electrons in an electron microscope have speed of 4.7 Mm/s . Part A Find their de Broglie wavelength. Express your answer to two significant figures and include the appropriate units.
1. (A) Find the de Broglie wavelength (in nm) associated with an electron that is moving with a velocity of 2310 km/s. The electron rest mass is 9.11 x 10-31 kg. Note, electrons having this speed would need to be treated as waves in atoms because the wavelength is on the order of the size of atoms. (B) A baseball weighs 220 g. Top speed for a professional pitcher is about 100 mph when he throws a fast ball. Find...
The de Broglie wavelength of a 455 kg car is found to be 5.43 x 10-47 nm. Calculate the speed (m/s) of the car. A. 26.8 m/s B. 37.3m/s C. 2.68 x 1019 m/s D. 3.73x 107 m/s E. 3.00x108 m/s
In a typical electron microscope, the momentum of each electron is about 1.9 10-22 kg-m/s. What is the de Broglie wavelength of the electrons? m
The electrons that produce the picture in a TV set are accelerated by a very large electric force as they pass through a small region in the neck of the picture tube. This region is 1.4 cm in length, and the electrons enter with a speed of 1× 105 m/s and leave with a speed of 1.5 × 108 m/s. a. What is their acceleration over this 1.4 cm length? Answer in units of m/s2. b. How long is the...