If a particle is released from x = a, what is the minimum amount of kinetic energy required such that a particle never returns to the origin? Answer in terms of E0 (answer may contain e)
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If a particle is released from x = a, what is the minimum amount of kinetic energy required such that a particle never returns to the origin? Answer in terms of E0 (answer may contain e)
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- 8:56 9 27 O 3 all all 66%i (2) abäi The mechanical energy of an * :object is given by mgh 1/2mv*v EK+EP Ek1+EP1=Ek2+EP2 O (2) uhäi Which one of the following is equivalent to the Sl unit of ?energy A mass of 1 kg falls for 1m O A force of 1 N moves an object 1m in its direction. A joule of work is done per second. An applied force of 1 N acts on a stationary object II K210- 84 X (atomic mass = 209.98285 u) undergoes a decay. Assuming all the released energy is in the form of kinetic energy of the a particle (atomic mass = 4.002603 u) and ignoring the recoil of the daughter nucleus (206X1 atomic mass = 205.97444 u), find the speed of the a particle. 82 Ignore relativistic effects. Number UnitsThe carbon isotope 14C is used for carbon dating of objects. A 14C nucleus can change into a different kind of element, a neighbor on the periodic table with lower mass, by emitting a beta particle – an electron or positron – plus a neutrino or an anti-neutrino. Consider the scenario where 14C ( mass of 2.34 x 10 -26) decays by emitting an electron and anti neutrino. The electron has a mass of 9.11x 10-31 kg and a speed of 5.5 x107 m/s. While the anti neutrino has a momentum of 8.5x10-24 kg-m/s. If the electron and anti neutrino are emitted at right angles from each other, calculate the recoil speed of the nucleus.
- You have an object of mass 30.6 kg. If it is moving at a speed of 7.1 m/s and is a distance of 4.3 m above the ground, what is the total energy of the object, in Joules? (Use the ground as your zero for gravitational potential energy.) Your Answer: AnswerYour answer is partially correct. The summit of a mountain is 5540 m above sea level. (a) How much energy would a 87 kg climber expend against the gravitational force on him in climbing to the summit from sea level? (b) How many candy bars, at 2.13 MJ per bar, would supply an energy equivalent to this? Your answer should suggest that work done against the gravitational force is a very small part of the energy expended in climbing a mountain. (a) Number i 4.728 Units m (b) 2.22We have the following nuclear reaction, 73Li + p −→ 74Be + n the neutrons are ejected at an angle of 90° relative to the original direction of the proton beam. The kinetic energy of neutrons is 1.94 MeV. (a) Calculate the Q of the nuclear reaction
- 4. Consider following the following the fusion nuclear reaction: n+p+p→;He. What happens to the different types of potential energies of this system as a result the reaction (i.e. the electrical potential energy and the strong nuclear potential energy)? The atomic mass of He is 3.016029 u. a. The electrical potential energy and the strong nuclear potential energy both increase. b. The electrical potential energy increases and the strong nuclear potential energy decreases. c. The electrical potential energy increases and the strong nuclear potential energy remains the same. d. The electrical potential energy decreases and the strong nuclear potential energy increases. e. The electrical potential energy and the strong nuclear potential energy both decrease.How many grams of matter would have to be totally destroyed to run a 100-W lightbulb for 3.0 y? Express your answer using two significant figures. m = ΜΕ ΑΣΦ ? g bo