Mary asks…
Neutrons used 2 obtain images ofthe hydrogen atoms in molecules. What energy must be imparted to each ne?
Neutrons are used to obtain images of the hydrogen atoms in molecules. What energy must be imparted to each neutron in a neutron beam to obtain a wavelength of 8.9 pm? Obtain the energy in electron volts (eV) (1 eV = 1.602 10-19 J).
adminsta answers:
Use the de Broglie equation to find the neutron velocity needed:
wavelength = h/(mv), convert wavelength to meters first.
H is Planck’s constant (look this up, make sure units are J-s)
m is neutron mass (look this up, make sure units are kg)
v is velocity in m/s.
Then use the kinetic energy equation to find E:
E = (1/2) mv^2, make sure mass is in kg and velocity is in m/s to obtain E in Joules. Then convert E to eV.
Betty asks…
Where can I find free Images on Nuclear energy for school project?
adminsta answers:
Http://images.google.co.uk/images?q=Nuclear+energy+&ie=UTF-8&oe=utf-8&rls=org.mozilla:en-GB:official&client=firefox-a&um=1&sa=N&tab=wi
Jenny asks…
can any one give me the images of kinetic energy?
iam supposed to submit this project on 25th of this month,
just an self illustrative picture.
adminsta answers:
Kinetic energy refers to the energy of moving objects. The heavier the object and the faster it moves, the higher its kinetic energy.
Find pictures of objects that are moving – vehicles on the water (submarine, boats, canoes), on air (airplanes, helicopters, parachutes), on land (trains, cars, bikes).
You can include pictures of athletes involved in various types of sports – basketball, skiing, football, baseball, soccer, marathon, ice-skating, etc. People dancing, leaping, jumping, and twirling, will look nice too.
Hope this helps.
Lizzie asks…
Images and Graphs on saving home Energy/Electricity?
Hi, can anyone help me to find images and graphcs for saving home energy/electricity?
I am trying to do a project, so any help would be really aprreciated…
Thank You!
adminsta answers:
1. Go to: “Research your answer” on your question page. 2. Type in: Energy/Home/Graph/Display/Information/Details? 3. Go to: #1.
Chris asks…
What does the cross on a back of a energy mean?
what do the little crosses mean by the Taurine,Glucuronolacton,Caffenie,Panax Ginseng extract,Guarana seed extract,L-Camitine and insitol
http://www.fasttrackfundraising.com/images/energy-drink-fundraiser-label.jpg
adminsta answers:
Usually they refer to a comment below about the product like ‘the fda has not approved this yada, yada yada’ or something
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