please show all work 9) Calculate the kinetic energy in eV) of a nonrelativistic neutron that...
please show all work 4) A metal having a work function of 2.5 eV is illuminated with white light that has a continuous wavelength band from 400 nm to 700 nm. For which one of the following ranges of the wavelength band in this white light are photoelectrons NOT produced? (h-6.626 x 10-34 J s, c 3.00 x 108 m/s. 1 eV- 1.60 x 10-19 J) Aner Answer oibn MAW od voa 5) A metal having a work function of...
7) Calculate the de Broglie wavelength of a neutron that has a velocity of 200.cm/s. (mass of a neutron = 1.675 x 10-27 kg and h = 6.63 x 10-34 J.) A) 1.98 x 10-9 m B) 216 nm my E=hu 6 1.8 x 1050 m = 1.98x107 D 198 nm E) 5.05 mm . E= 1.98x1E) -= 2.685x cour 6.630 16 34 3.36410-27 6.637 10 34 Cadu
An electron with a kinetic energy of 47.34 eV is incident on a square barrier with Ub = 56.43 eV and w = 2.000 nm. What is the probability that the electron tunnels through the barrier? (Use 6.626 ✕ 10−34 J · s for h, 9.109 ✕ 10−31 kg for the mass of an electron, and 1.60 ✕ 10−19 C for the charge of an electron.)
The energy of a proton is 1.0 MeV below the top of a 1.2-MeV-high energy barrier that is 6.8 fm wide. What is the probability that the proton will tunnel through the barrier? (1 eV = 1.60 x 10-19 J, Mproton = 1.67 x 10-27 kg, -h = 1.055 x 10-34 J·s, h = 6.626 x 10-34). s) 1) 11% O2) 9.1% O 3) 14% 4) 7.5%
1) Calculate the de Broglie wavelength of a thermal neutron that has a kinetic energy of about 6.31X10-21 J. (Express your answer to three significant figures.) nm Submit
A photoelectric surface has a work function of 2.10 eV. Calculate the maximum kinetic energy, in eV, of electrons ejected from this surface by electromagnetic radiation of wavelength 356 nm. (Note: h = 6.63x10^-34 C and c = 3.00x10^8 m/s).
When a metal is illuminated by light, photoelectrons are observed provided that the wavelength of the light is less than 606 nm. What is the metal's work function? (c - 3.00 x 10 m/s, h = 6.626 x 10-34 J·s, 1 eV = 1.60 x 10-19)) 25 ev 2.2 eV 24ev 21ev
An electron beam was configured by accelerating the electrons to 1.00 × 10^5 eV kinetic energy. What is the de Broglie wavelength of these electrons, in meters?
What is the de Broglie wavelength (in meters) of a neutron traveling at a speed of 0.92 c? Since the neutron's speed is close to the speed of light (c), Special Relativity must be used when calculating the linear momentum (p). The mass of the neutron is 1.675 x 10-27 kg. Suppose that an alpha particle (mαα = 6.646 x 10-27 kg) has a kinetic energy of 75 keV. What is the alpha particle's speed (v) (in terms of "c")?...
Practice Exercise. What must the kinetic energy of a helium atom with a mass of 6.65 x 10-27 kg be so that it has a de Broglie wavelength of 2.80 x 10-12 m? (Answer: 4.21 10-18 J)