A neutron of mass  1.675 × 10-27 kg has a de Broglie wavelength of 7.8x10-12 m.  What is the kinetic energy (in eV) of this non-relativistic neutron?  Please give your answer with two decimal places. 1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ∙ s.

A photon in a laboratory experiment has anenergy of 4.1 eV.What is the frequency of this photon?Planck’s constant is 6.63 × 10−34 J · s.Answer in units of Hz.

An X-ray photon with a wavelength of 0.999 nmnm strikes a surface. The emitted electron has a kinetic energy of 990 eV. What is the binding energy of the electron in kJ/molkJ/mol? [Note that KEKE = 12mv212mv2 and 1 electron volt (eVeV) = 1.602×10−19J1.602×10−19J.] Express your answer using three significant figures.

What is the energy of a photon with a frequency of 7.4*10^15 Hz?  An electron emits a photon by undergoing an energy transition of 2.84*10^-19 J. What is the wavelength of this photon.

3. The equation 1.45 in our textbook says that the de Broglie wavelength as a function of temperature is given by 1 Assuming the accepted accuracy for h, R, and m are very high, what is the V3MRT maximum uncertainty in the de Broglie wavelength if AT is the uncertainty in temperature?

Hz. Find the energy (in eV) of a photon with a frequency of 1.5 x 1016 eV Need Help? Read It

Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 × 10-¹⁹ J. (a) a photon having a frequency of 7.60 × 10¹7 Hz 3.1E+3 eV (b) a photon having a wavelength of 4.60 x 10² nm X eV 2.95

A fly with a mass of 19.3 mg is moving with a velocity of 6.7 m/s ± 10%. What is the momentum of this fly? kgm/s What is the uncertainty in the momentum measurement? kgm/s At best, what is the uncertainty in the position of the fly? m

Gamma rays (?-rays) are high-energy photons. In a certain nuclear reaction, a ?-ray of energy 0.836 MeV (million electronvolts) is produced. Compute the frequency of such a photon. How do I enter 2.02*10^20 in the answer window?

QUESTION 1 A photon emitted by a blackbody has an energy of 1.021 J. What is the frequency of such a photon?(h=6.63.10-34 J.s) QUESTION 2 What is the energy (in eV) of a gamma-ray photon with frequency f=5.67-102¹ Hz? (h=4.136-10-15eV/Hz) QUESTION 3 The ground level of the hydrogen atom has an energy E,= 13.6 eV while the first excited state has an energy Calculate the energy difference of an electron going from the first excited state back to the ground state. 1 QUESTION 4 What is the frequency of the photon emitted by the electron in Question 3? QUESTION 5 E 2= -3.4 eV. An electron has a wavelength of 0.267 nm (1 nm = 10-9 m). What is the speed of such electron orbiting the nucleus? ( m=9.11-10-31 kg)