b). Our body is basically electrical machines. Do you agree with this fact? Explain
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- A bare helium nucleus has two positive charges and a mass of 6.64 107 -27 (a) Calculate its kinetic energy in joules at 2% of the speed of light. KE = (b) What is this in electron volts? KE = ✔ev (c) Assume that the nucleus starts from rest and accelerates through a potential difference V, what quantity is conserved? O A. Mechanical Energy B. Kinetic Energy C. Potential Energy D. None of those quanitites are conserved kg. (d) What voltage would be needed to obtain this energy? V = ✓ VAn archaeon has 9.8 × 1016 protons and a net charge of 1.3 pC. a. How many fewer electrons are there than protons? b. If you paired them up, what fraction of the protons would have no electrons6. A small ball of mass 2.5 x 10-4 kg is suspended on a 70.0 cm string, halfway between two parallel plates positioned 10.0 cm apart. If the ball has a surplus of 3.6 x 1012 electrons, what is the minimum potential difference across the plates needed to move the ball such that it swings and touches one of the plates? (Assume the radius of the ball is negligible. 7 Th nno tolog off at 25 mio at 550 to the TL
- 1a) To separate a 0.14 C charge from another charge, 26 J of work is done. What is the voltage of the 0.14 C charge?=__________ V 1b) How far does light travel in one year? [This distance is known as a light-year (ly) and is used in measuring astronomical distances.] =_________km 1c) What is the period of the wave motion for a wave with a frequency of 0.21 kHz?=_________ s4. What is the magnitude of the electrical force between two uranium nuclei placed a distance of 4.74 x 10^-12 m apart from one another? 0.148 N 0.061 N 0.087 N 0.122 N2. What is the repulsive electrical force between two protons 4.0 x10 -15 m apart from each other in an atomic nucleus?
- For the circuit shown in the figure, what is the current through the 10-22 resistor? 16V ©2010 Pearson Education, inc ΟΙΑ 1 A 0.6 A 5Ω ww ww 10 Ω ww 15 Ω ww 6ΩA Van de Graff generator can kill a person. a) True b) FalseWhat is the electrostatic force of attraction between a -8.0 x10-6 C charge and a 4.0 x 10-6C if they are separated by a distance of 4 meters (m)?