Homework Statement
Complete the following nuclear reactions, assuming that the unknown quantity signified by a question mark is a single entry. Use the following table for your answers: 0 = gamma, 1 = p, 2 = alpha , 3 = n.
(a) 20X43(alpha,?)21X46
(b) 4X9(?,n)6X12
Homework Equations...
Homework Statement
Find the binding energy (in MeV) for lithium 3Li8 (atomic mass = 8.022486 u).
Homework Equations
Binding energy = (#p)(mass proton) + (#n)(mass neutron) - (mass nuclei*c^2)
The Attempt at a Solution
mass proton = 1.007825
mass neutron = 1.008665
Binding energy...
The program I enter my homework answers into doesn't let me have that many decimal places in my answer though (we have to write it out long, it doesnt let us put x10^21), so I was assuming I must've done something wrong.. :-/
Homework Statement
Light is shining perpendicularly on the surface of the earth with an intensity of 910 W/m2. Assuming all the photons in the light have the same wavelength (in vacuum) of 668 nm, determine the number of photons per second per square meter that reach the earth.
Homework...
Homework Statement
The drawing shows a rectangular block of glass (n = 1.52) surrounded by a liquid with n = 1.79. A ray of light is incident on the glass at point A with a 30.0° angle of incidence. At what angle does the ray leave the glass at point B...
Homework Statement
An anatomist is viewing heart muscle cells with a microscope that has two selectable objectives with refracting powers of 140 and 270 diopters. When she uses the 140-diopter objective, the image of a cell subtends an angle of 3.7 x 10-3 rad with the eye. What angle is...
Ok so I took 1/13.487 + 1/i = 1/-6.5
and I solved for i and got -4.386 cm.
Is this correct, or should I have used -13.487 and got -12.547 as my answer?
Homework Statement
Two identical diverging lenses are separated by 13 cm. The focal length of each lens is -6.5 cm. An object is located 3.0 cm to the left of the lens that is on the left. Determine the final image distance relative to the lens on the right.
Homework Equations
1/i + 1/o...