Suppose an experiment is performed with ultracold neutrons having velocities of 1.05 m/s. A) What is...
Suppose an experiment is performed with ultracold neutrons having velocities of 1.05 m/s.
A) What is the wavelength of such a neutron, in nanometers?
B) What is its kinetic energy, in electronvolts?
Homework Answers
Solution)
Given,
Velocity,v=1.05 m/s
Here, Momentum, P=mV=(1.675*10^-27 kg)*(1.05)
P=1.75*10^-27 kg-m/s
Now, lambda=h/P=(6.626*10^-34)/(1.75*10^-27)=3.76*10^-7 m
=376.74 nm(Ans)
==========
Part b)
Kinetic Energy, KE=P*V/2=(1.75*10^-27)*(1.05)/2=9.18*10^-28 J
=5.74*10^-9 eV (Ans)
=========
Add Answer to:
Suppose an experiment is performed with ultracold neutrons
having velocities of 1.05 m/s.
A) What is...
Experiments are performed with ultracold neutrons having velocities of 3.07 m/s. (a) What is the wavelength...
Experiments are performed with ultracold neutrons having velocities of 3.07 m/s. (a) What is the wavelength (in nm) of such a neutron? (b) What is its kinetic energy in eV?
The neutrons in a parallel beam, each having kinetic energy 0.035 eV , are directed through...
The neutrons in a parallel beam, each having kinetic energy 0.035 eV , are directed through two slits 0.50 mm apart. How far apart will the interference peaks be on a screen 1.1 m away? [Hint: First find the wavelength of the neutron.]
Please help me out with this questions. Thank you. Neutrons can be produced at low temperatures...
Please help me out with this questions. Thank you.
Neutrons can be produced at low temperatures to serve as probes of molecular structure. When the de Broglie wavelength of a neutron is on the order of the dimensions of chemical bond lengths, the diffraction patterns are especially important for molecular structure. If the speed of a thermal neutron is given by the expression v = (3k_BT/m)^1/2, at what temperature will neutrons have a de Broglie wavelength of 50 pm =...
3. An alpha particle is a subatomic particle consisting of two protons and two neutrons. Con-...
3. An alpha particle is a subatomic particle consisting of two protons and two neutrons. Con- sider a particle has an initial velocity of v , 6.5 × 10%, and the proton has an initial velocity of Up = 0쯩. Assume the proton and the neutron have the sam e mass. a) What are the final velocities of the alpha particle and the proton? b) What is the ratio of the final kinetic energy of the alpha particle to the...
3. A simple model of a Neutron star is an ideal gas of neutrons (each with spin 1/2 in units of h...
3. A simple model of a Neutron star is an ideal gas of neutrons (each with spin 1/2 in units of h). Aside from the kinetic energy of the neutrons, one must consider the gravitational energy, which for a homogeneous star of mass M and radius R, is 3GM2 5R where G 6.67 x 10-11m3kg-'s-2 is the universal gravitational constant (i) We suppose in this problem that the Fermi temperature is large enough for T0 What general condition determines the...
(a) Calculate the momentum (in kg · m/s) of a photon having a wavelength of 8.38...
(a) Calculate the momentum (in kg · m/s) of a photon having a wavelength of 8.38 µm. ___ kg · m/s (b) Find the velocity (in m/s) of an electron having the same momentum. ___ m/s c) What is the kinetic energy (in J) of the electron? ___ J How does it compare with the energy of the photon? Ephoton/KEelectron = _____ please help with these questions, thanks!
7.57 What is the wavelength of a neutron traveling at a speed of 4.15 km/s? (Neutrons...
7.57 What is the wavelength of a neutron traveling at a speed of 4.15 km/s? (Neutrons of these speeds are obtained from a nu- clear pile.)
An experiment is performed where light of different frequencies is shined on a copper plate. The...
An experiment is performed where light of different frequencies is shined on a copper plate. The work function for copper is 4.70 eV. (a) What is the lowest frequency (the "cutoff" frequency, in Hz) of light incident on copper, below which no photoelectrons will be emitted from its surface? Hz (b) What is the longest wavelength (the "cutoff" wavelength, in nm) of light incident on copper, above which no photoelectrons will be emitted from its surface? nm (c) Photons of...
An alpha particle (m = 4.002602 u) is moving at 3.60 times 10^2 m/s. a) Find...
An alpha particle (m = 4.002602 u) is moving at 3.60 times 10^2 m/s. a) Find its mass in kilograms. (6.64 times 10^-27 kg) b) Find its kinetic energy. (4.30 times 10^-22 J) c) Find its kinetic energy in MeV. (2.69 times 10^-9 MeV) d) Find its momentum. (2.39 times 10^-24 kg. m/s) e) Find its deBroglie wavelength (2.77 times 10^-10 m = 0.277 nm) A stationary nucleus of protactinium-231 (m = 231.035879 u) decays by alpha radiation to a...
Two 2.0 kg bodies, A and B, collide. The velocities before the collision are (251101 m/s...
Two 2.0 kg bodies, A and B, collide. The velocities before the collision are (251101 m/s and i, - (-331+50))m/s. After the collision, VA= (-5.01 +40)m/s. What are(a) the final velocity of Band (b) the change in the total kinetic energy
Please help me out with this questions. Thank you.
Neutrons can be produced at low temperatures to serve as probes of molecular structure. When the de Broglie wavelength of a neutron is on the order of the dimensions of chemical bond lengths, the diffraction patterns are especially important for molecular structure. If the speed of a thermal neutron is given by the expression v = (3k_BT/m)^1/2, at what temperature will neutrons have a de Broglie wavelength of 50 pm =...
3. An alpha particle is a subatomic particle consisting of two protons and two neutrons. Con- sider a particle has an initial velocity of v , 6.5 × 10%, and the proton has an initial velocity of Up = 0쯩. Assume the proton and the neutron have the sam e mass. a) What are the final velocities of the alpha particle and the proton? b) What is the ratio of the final kinetic energy of the alpha particle to the...
3. A simple model of a Neutron star is an ideal gas of neutrons (each with spin 1/2 in units of h). Aside from the kinetic energy of the neutrons, one must consider the gravitational energy, which for a homogeneous star of mass M and radius R, is 3GM2 5R where G 6.67 x 10-11m3kg-'s-2 is the universal gravitational constant (i) We suppose in this problem that the Fermi temperature is large enough for T0 What general condition determines the...
7.57 What is the wavelength of a neutron traveling at a speed of 4.15 km/s? (Neutrons of these speeds are obtained from a nu- clear pile.)
An alpha particle (m = 4.002602 u) is moving at 3.60 times 10^2 m/s. a) Find its mass in kilograms. (6.64 times 10^-27 kg) b) Find its kinetic energy. (4.30 times 10^-22 J) c) Find its kinetic energy in MeV. (2.69 times 10^-9 MeV) d) Find its momentum. (2.39 times 10^-24 kg. m/s) e) Find its deBroglie wavelength (2.77 times 10^-10 m = 0.277 nm) A stationary nucleus of protactinium-231 (m = 231.035879 u) decays by alpha radiation to a...
Two 2.0 kg bodies, A and B, collide. The velocities before the collision are (251101 m/s and i, - (-331+50))m/s. After the collision, VA= (-5.01 +40)m/s. What are(a) the final velocity of Band (b) the change in the total kinetic energy
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago