roadjester
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roadjester:
Group Title
40. A sample consists of \(1.00 X 10^6\) radioactive nuclei with a halflife of 10.0 h. No other nuclei are present at time t = 0. The stabl…
 updated 4 months ago
 62 replies
 1 Medal
Mathematics

Silent_Sorrow:
Group Title
Special Relativity  Use spacetime diagrams to propose a resolution to the runner on the train paradox.
 updated 5 months ago
 12 replies
 1 Medal
Mathematics

roadjester:
Group Title
Planck's constant and the photoelectric effect:
Someone help. I have no clue what the difference between standard deviation and standard …
 updated 5 months ago
 2 replies
 No Medals Yet
Mathematics

roadjester:
Group Title
32. An electron has a kinetic energy of 12.0 eV. The electron is incident upon a rectangular barrier of height 20.0 eV and width 1.00 nm. If…
 updated 5 months ago
 5 replies
 No Medals Yet
Mathematics

Silent_Sorrow:
Group Title
At noon a rocket ship passes the Earth with a velocity 0.8c. Observers on the ship and on the Earth agree that it is noon. At 12:30 pm as re…
 updated 5 months ago
 9 replies
 No Medals Yet
Mathematics

averyshred:
Group Title
One string of a certain musical instrument is 75.0cm long and has a mass of 8.77g . It is being played in a room where the speed of sound is…
 updated 5 months ago
 5 replies
 No Medals Yet
Mathematics

QueenBee232:
Group Title
In a thunderstorm at 20.0 C Amanda is able to see a lightning strike and hears the thunderclap about 3.0 s afterwards. How far was the light…
 updated 5 months ago
 11 replies
 1 Medal
Mathematics

Unitystep:
Group Title
In the most detail you can possibly explain, how would I find the 'K' or the spring constant of a slope where the 'y' axis is labeled as New…
 updated 5 months ago
 27 replies
 1 Medal
Mathematics

roadjester:
Group Title
28. Suppose a quantum particle is in its ground state in a box that has infinitely high walls (see Active Fig. 41.4a). Now suppose the left…
 updated 5 months ago
 1 reply
 No Medals Yet
Mathematics

QueenBee232:
Group Title
Five waves pass a dock in 2.0 s. If the waves are traveling at 10.0 m/s, then what is the wavelength of the waves?
 updated 5 months ago
 17 replies
 1 Medal
Mathematics

CNmubarak:
Group Title
The sun radiates about 3.6 x 1026 joules of energy each second. How much mass does the sun lose each second? Show your work.
 updated 5 months ago
 4 replies
 No Medals Yet
Mathematics

CNmubarak:
Group Title
A force is a push or a pull. Newton's third law further defines the meaning of force. Explain.
 updated 5 months ago
 6 replies
 2 Medals
Mathematics

CNmubarak:
Group Title
Suppose you are on an airplane moving at high speed. If you flip a coin straight up it will land in your lap rather than a great distance be…
 updated 5 months ago
 3 replies
 2 Medals
Mathematics

ngott3:
Group Title
can someone explain the solution to me for this question
 updated 5 months ago
 3 replies
 4 Medals
Mathematics

Clink33:
Group Title
What is the magnitude of the force on an electron moving with a velocity v = 6.1106 m/s parallel to a magnetic field B = 1.83102 T?
…
 updated 5 months ago
 2 replies
 1 Medal
Mathematics

m806texas:
Group Title
so theres this physics question
 updated 5 months ago
 3 replies
 1 Medal
Mathematics

CNmubarak:
Group Title
A boy fires a table tennis launcher. Briefly describe the forces and impulses on the launcher and the ball. Which has more momentum? Which i…
 updated 5 months ago
 3 replies
 1 Medal
Mathematics

CNmubarak:
Group Title
In terms of momentum change, explain why it is best to "give" when catching a baseball. Provide other examples of situations in which you wa…
 updated 5 months ago
 7 replies
 No Medals Yet
Mathematics

briannamariee33:
Group Title
if an atom has 34 protons and 40 neutrons, what is its mass number?
 updated 5 months ago
 2 replies
 3 Medals
Mathematics

CNmubarak:
Group Title
You do work on something when you lift it against gravity. How does this work relate to gravitational potential energy? If the lifted object…
 updated 5 months ago
 7 replies
 1 Medal
Mathematics

m806texas:
Group Title
Consider a small car of mass 1296 kg and a large sport utility vehicle (SUV) of mass 3640 kg. The SUV is traveling at the speed limit (v = 3…
 updated 5 months ago
 3 replies
 No Medals Yet
Mathematics

babixz101:
Group Title
Which of the following is true about the atom shown below? Choose all that apply. (2 points)
https://www.connexus.com/content/media/886560…
 updated 5 months ago
 2 replies
 No Medals Yet
Mathematics

selenadebby:
Group Title
An 85m long train begins accelerating at a constant rate from rest. The front of the train passes a railway worker, who is standing 300 mete…
 updated 5 months ago
 4 replies
 No Medals Yet
Mathematics

QueenBee232:
Group Title
Which of the following kinds of electromagnetic radiation has the shortest wavelength and the highest energy photons?
ultraviolet waves
…
 updated 5 months ago
 12 replies
 1 Medal
Mathematics

Silent_Sorrow:
Group Title
Two inertial frames of reference O and O’ are in the standard configuration, frame O’ having velocity v with respect to frame O. At the inst…
 updated 5 months ago
 6 replies
 No Medals Yet
Mathematics

dixiemitsy:
Group Title
Would someone help me with this problem?
How many 160 resistors must be connected in parallel to draw a current of 6A from a 120V source?
 updated 6 months ago
 23 replies
 1 Medal
Mathematics

AleezaButler:
Group Title
Can someone check this worksheet for me?
 updated 6 months ago
 3 replies
 1 Medal
Mathematics

Mashy:
Group Title
Any Nice online course on Special theory of relativity? or any good website source?
Most I saw, have only the introductory concepts with …
 updated 6 months ago
 16 replies
 1 Medal
Mathematics

Data_LG2:
Group Title
In the figure below, the pulleys and the cord are light, all surfaces are frictionless, and the cord does not stretch.
(a) How does the a…
 updated 6 months ago
 2 replies
 1 Medal
Mathematics

harishk:
Group Title
Can any one tell me
how to separate hcl + water solution without adding any base.......?????
…
 updated 5 months ago
 10 replies
 No Medals Yet
Mathematics
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