(3.2. Assuming that the smallest measurable wavelength in an experiment is 0.390 fm (femtometres), what is the maximum mass of an object traveling at 577 m/s for which the de Broglie wavelength is observable?

Diffraction effects become significant when the width of an aperture is comparable to the wavelength of the waves being diffracted. (a) At what speed will the de Broglie wavelength of a 65-kg student be equal to the 0.76-m width of a doorway? (b) At this speed, how much time will it take the student to travel a distance of 1.0 mm? (For comparison, the age of the universe is approximately 4 * 10^17 s.)

A 100-Watt tungsten filament lamp operates at a temperature of 2198 K. Assuming that the filament emits like a black body, determine the wavelength (in nm) of the maximum irradiance

(a) 620 nanometers (nm)? (b) What are the energy and momentum of a photon of red light of wavelength What is the wavelength (in nm) of photons of energy 2.40 eV? 1.

When an aperture's diameter matches the wavelength of the waves being diffracted, the effects of diffraction become noticeable. (A) At what speed would a 75-kg student's de Broglie wavelength be the same as a doorway's 0.76-m width? (b) How long will it take the student to traverse 5.0 millimeters at current speed? (In contrast, the universe is thought to have existed for about 4 * 1017 seconds.)

1.2) In a region of gas where the optical depth is 2.0, what percentage of photons can escape without being scattered or absorbed?

. Find the momentum of a photon in eV/c and in kg·m/s if the wavelength is (a) 400 nm, (b) 1 Å = 0.1 nm, (c) 3 cm, and (d) 2 nm.

A radio transmitter broadcasts with a power of 9.73 kW and a frequency of 91.5 MHz. At what distance will a circular dish antenna with a diameter of 100 m intercept 1 photon/s. Give your answer in units of light-years (e.g. 0.450 for 0.450 light years) Round your answer to 3 decimal places. Add your answer Question 2 A light beam moving with velocity c along the x-axis approaches a space-ship moving with velcity 0.9c along the y-axis. The velocity of the light beam relative to the space ship is: A >c B) less than c but greater than 0.9c c) <.9c

A) Calculate the de Broglie wavelength of a neutron (mn = 1.67493×10-27 kg) moving at one six hundredth of the speed of light (c/600). Enter at least 4 significant figures. (I got the answer 949.4 pm but it is wrong, please help) B) Calculate the velocity of an electron (me = 9.10939×10-31 kg) having a de Broglie wavelength of 230.1 pm.

Determine lm , the wavelength at the peak of the Planck distribution, and the corresponding frequency ƒ, at these temperatures: (a) 3.00 K; (b) 300 K; (c) 3000 K.