Physics

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If in the future significant amounts of antimatter could be made, it might be prevented from ... Started by jwb375	1 Replies 43 Views	Jul 27, 2018 by aloop
In the ground state, the quantum numbers (n, , m , ms) for hydrogen are, respectively, A) 1, 1, ... Started by karlynnae	1 Replies 82 Views	Jul 27, 2018 by SVictor
Which of the following is NOT a conventional spacecraft design? A) a matterantimatter rocket B) ... Started by Yi-Chen	1 Replies 85 Views	Jul 27, 2018 by Anna
The moment of inertia of a uniform rod (about its center) is given by I = ML2/12. What is the ... Started by vicotolentino	3 Replies 121 Views	Jul 27, 2018 by 6ana001
In a particular case of Compton scattering, a photon collides with a free electron and scatters ... Started by abarnes	1 Replies 92 Views	Jul 27, 2018 by reelove4eva
At what angle, with the surface, must light strike glass (refractive index 1.6 ) in order to ... Started by a0266361136	1 Replies 117 Views	Jul 27, 2018 by Anton
During the annihilation of matter and antimatter, what percentage of the mass of the colliding ... Started by penguins	1 Replies 102 Views	Jul 27, 2018 by jgranad15
A ray of light traveling in water (n = 1.33 ) hits a glass surface (n = 1.50). At what angle, with ... Started by cagreen833	3 Replies 189 Views	Jul 27, 2018 by 31809pancho
Which kind of interstellar spacecraft collects its fuel during its passage? A) interstellar ark ... Started by urbanoutfitters	1 Replies 155 Views	Jul 27, 2018 by jazzlynnnnn
One 20-year-old twin brother takes a space trip with a speed of 0.80c for 30 years according to a ... Started by Deast7027	1 Replies 188 Views	Jul 27, 2018 by Meganchabluk
The main practical problem associated with building an interstellar ramjet is A) making the ship ... Started by nautica902	1 Replies 59 Views	Jul 27, 2018 by blazinlyss
What is the momentum in kgm/s of a proton when it is moving with a speed of 0.60c? A) 1.2 10-19 ... Started by TFauchery	3 Replies 234 Views	Jul 27, 2018 by Sweetkitty24130
The energy required to ionize a hydrogen atom from the ground state is A) 27.2 eV. B) 13.6 eV. ... Started by tfester	1 Replies 141 Views	Jul 27, 2018 by owenfalvey
A polarizer (with its preferred direction rotated 30 to the vertical) is placed in a beam of ... Started by xclash	1 Replies 115 Views	Jul 27, 2018 by lin77x
During a reaction, an element loses 4.8 10-28 kg of mass. How much energy (in Joules) is released? ... Started by clmills979	1 Replies 188 Views	Jul 27, 2018 by tdewitt
Einstein's General Theory of Relativity tells us that a photon traveling close to a massive object ... Started by erika	3 Replies 107 Views	Jul 27, 2018 by Cnarkel
During a reaction, 1.7 10-4 J of energy is released. What change of mass would cause this? A) ... Started by crobinson2013	1 Replies 194 Views	Jul 27, 2018 by brbarasa
The energy of an electron state has an uncertainty of about 0.500 eV. What is the uncertainty in the ... Started by scienceeasy	1 Replies 200 Views	Jul 27, 2018 by bigsis44
Unpolarized light is passed through a polarizer-analyzer combination. The transmission axes of the ... Started by swpotter12	1 Replies 99 Views	Jul 27, 2018 by krakiolit
In state n = 1, the energy of the hydrogen atom is -13.58 eV. What is its energy in state n = 2? ... Started by craiczarry	3 Replies 96 Views	Jul 27, 2018 by Beatricemm
The amount of energy equivalent to one kilogram of mass at rest is A) 9.0 1016 J. B) 3.0 108 ... Started by yoroshambo	1 Replies 94 Views	Jul 27, 2018 by Ptupou85
A wormhole is a A) passageway to a parallel universe through a black hole B) shortcut between ... Started by magmichele12	1 Replies 63 Views	Jul 27, 2018 by hramirez205
An 8.0 kg-m2 wheel with 155. Joules of rotational kinetic energy requires what torque to bring it to ... Started by jhjkgdfhk	1 Replies 66 Views	Jul 27, 2018 by katkat_flores
A possible design of a warp drive might involve A) generating a shortcut between two distant ... Started by darbym82	3 Replies 38 Views	Jul 27, 2018 by karlss
How is the Fermi Paradox normally stated? A) Why are we here? B) Who are we? C) Where are we? ... Started by madam-professor	1 Replies 67 Views	Jul 27, 2018 by Joc