
Why is 1 u = 1.6605 x 10^-27 kg? - Physics Forums
2012年7月23日 · Sorry if this is a dumb question.. maybe I'm largely overlooking something.. For example, 1 mol of N2 (diatomic nitrogen gas) is apparently equal to 2 x (14u) x 1.6605 x 10^ …
Mass Spectrometer and Electric Field Problem - Physics Forums
2005年10月5日 · Suppose the electic field between the two electric plates in the mass spectrometer is 2.48 x 10^4 V/m and the magnetic fields B=B'=0.68 T. The source contains …
Electrical Potential Energy Converted to Kinetic Energy - Physics …
2010年2月2日 · The potential difference between two parallel conducting plates in vacuum is 330 V. An alpha particle with mass of 6.50 x10-27 kg and charge of 3.20 x10-19 C is released from …
Special relativity: find speed and kinetic energy - Physics Forums
2010年4月28日 · A proton (rest mass 1.67x10^-27 kg) has total energy that is 3.2 times its rest energy. What is: a) the kinetic energy of the proton (in joules) b) the magnitude of the …
A 27-kg chandelier hangs from a ceiling on a vertical - Physics …
2014年10月25日 · Homework Statement A 27-kg chandelier hangs from a ceiling on a vertical 4.0-m-long wire. What horizontal force would be necessary to displace its position 0.15m to …
Where does 1u = 1.661x10^-24g come from? - Physics Forums
2009年5月4日 · The atomic mass unit (u) = 1.660538782×10 −27 kg (or 10^-24g) A proton has a mass of 1.672621637×10 −27 kg and a neutron 1.67492729×10 −27 The mass of the nucleus …
Atomic Mass Unit: Converting to kgs - Physics Forums
2005年4月25日 · Curious 3141's value should be right (I remember it being 1.66 x 10^-27 kg = 1 amu) If you wanted to derive it, you could remember that 1 amu is defined as 1/12 the mass of …
SHM Oscillation problem involving potential energy - Physics …
2014年4月23日 · For E < 4 * 10^-19 J it is a good approximation to the more accurate HCl potential-energy curve that was shown in Figure 10.31. Because the chlorine atom is so much …
Magnetic Forces and Magnetic Fields (mass spectrometer)
2007年2月28日 · Two isotopes of carbon, carbon-12 and carbon-13, have masses of 19.93x10^-27 kg and 21.59x10^-27 kg, respectively. These two isotopes are singly ionized (+e) and each …
Find the mass of two decayed fragments - Physics Forums
2009年5月3日 · Homework Statement An unstable particle with a mass equal to 3.34*10^-27 kg is initially at rest. The particle decays into two fragments that fly off with velocities of 0.987c and …