Physics (Please help!)
Three resistors of different values can be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produced? I can only find five... but the answer key says eight.
Physics
If a ball is thrown directly upwards with twice the initial speed of another, how much higher will it be at its apex? A) 8 times D) 2 times B) 4 times E) 2 times C) 2 2 times Please show any equations that are used :)
Physics
What visible wavelengths will eject electrons from a a metal with a work function of 2.6 eV? Please show all work I am a little confused :)
Physics
Lead 212/82Pb (atomic mass = 211.991871 u) is converted into bismuth 212/83Bi (atomic mass = 211.991255 u) via β- decay. What is the energy (in MeV) released in this process?
Alg1, Factoring
(x-1)(x+3)..... if you add 3 to negative one, you get two which is your middle number. If you multiply three and negative one, you get negative three which is your last number.
Physics
A proton is located at a distance of 0.430 m from a point charge of +8.30 µC. The repulsive electric force moves the proton until it is at a distance of 1.55 m from the charge. Suppose that the electric potential energy lost by the system is carried off by a photon that ...
Physics
That is what the question says n is
Physics
So i did (5.29e-11)(81)= 4.2849e-9. But it still says that is incorrect...
Physics
A triply ionized beryllium atom (Be3+) has only one electron in orbit about the nucleus. What is the radius of the ion when it is in the n = 9 excited state?
Physics
In the hydrogen atom the radius of orbit B is sixteen times greater than the radius of orbit A. The total energy of the electron in orbit A is -0.378 eV. What is the total energy of the electron in orbit B?
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