An Electron-Positron Pair Traveling Towards Each Other with a Speed $\rarr$

question 49

Multiple Choice

An electron-positron pair traveling towards each other with a speed of v with respect to their center of mass,collide and annihilate according to e^- + e⁺ $\rarr$ $\gamma$ + $\gamma$ .An observer at rest with respect to the center of mass of the electron-positron pair,detects two photons each of wavelength 380 fm.What was the speed,v prior to the collision?

• A)0.976 c
• B)0.923 c
• C)0.950 c
• D)0.995 c
• E)0.988 c

Identify the factors affecting the net advantage to leasing (NAL) and how to compute it.

Understand the implications of different CCA (Capital Cost Allowance) classes on leasing and purchasing decisions.

Calculate after-tax lease payments and understand their impact on financial decisions.

Recognize the importance of the cost of borrowed funds and the tax rate in making leasing versus buying decisions.

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The psychological theory that people are attracted to others who are similar to themselves in various aspects.

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A term used to describe societies and nations characterized by values, traditions, and institutions including democracy, individual rights, and the scientific method, largely rooted in European history.