What comes next M V E M?

Updated: 4/28/2022
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13y ago

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its the planets

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Q: What comes next M V E M?
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At what speed does a 1.00 kg mass have a kinetic energy of 1.00 joules?

***Answer 1*** Remember, KE= (1/2)m(v^2), 1 eV=1.6*10^-19 J -you need to convert, since 1J= 1N*m m of an electron is 9.1*10^-31 kg m of a proton is 1.67*10^-27 kg Good luck! ***Answer 2*** Answer 1 only works for non-relativistic speeds, also when you are dealing with Nuclear Physics you DO NOT want to convert out of eV. -------------------------------------------------------- E(total) = Energy Kinetic +Energy rest But in Nuclear Physics E(total) is actually; E^2 = (pc)^2 + (mc^2)^2 E(total) = E(kinetic) + E(rest) => 1.00keV = (pc)^2 from there you should be able to finish it.

What is the speed of sound through lead?

Assuming bulk properties of pure lead (at ambient pressure/temperature): density(rho) = 11340 kg/m3 Young's Modulus (E) = 16 GPa Poisson's Ratio(v) = 0.44 then, speed of sound, c is: c = sqrt[E*(1-v)/(rho*(1+v)*(1-2*v))] = 2138 m/s

Does a fish have momentum?

The momentum of any object is [ M V ]. 'M' is its mass, 'V' is its velocity. If the fish is moving, then [ M V ] is not zero, and it has momentum.

The kinetic energy of an asteroid traveling 60kms is how many times as great as one of the same mass traveling 30kms?

Since Kinetic Energy is defined as E = (1/2) * m * V ^^2 E(60kms) = (1/2) * m * 60^^2 = (1/2) * m * 3600 E(30kms) = (1/2) * m * 30^^2 = (1/2) * m * 900 E(60kms)/E(30kms) = 3600/900 = 4 Answer is 4 times as much.

Does a person standing motionless in a aisle of a moving bus have kinetic energy?

Yes. The person has a mass m and has the same velocity as the bus v, so has a kinetic energy E, where E = 1/2 * m *v^2 Obvioulsy, it all depends on your frame of reference, since this kinetic energy is due to the velocity of the person relative to the road due to the bus moving on that road at velocity v.