An electron moving along the +x-axis enters a magnetic field. If the electron experiences a magnetic deflection in the -y direction, then the magnetic field must have a component
A) along the +y-axis
B) along the -x-axis
C) along the -z-axis
D) along the +z-axis
E) along the -y-axis
C
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How many nucleons would you expect a nucleus to contain if its diameter is 13.4 fm?
What will be an ideal response?
In the very first phase after the big bang, when the Universe was about a microsecond old, space was filled with____
a. high-energy photons b. protons and antiprotons c. protons, neutrons, electrons, and positrons (anti-electrons) d. electrons, and positrons (anti-electrons) e. protons, neutrons, electrons
Length Contraction: A starship is constructed to be 100 m long in the factory. It is launched and as it coasts by Earth, it is measured to be shortened to 5.48 m long.(a) How fast, in terms of the speed of light, is it moving past Earth?(b) What length does the ship's crew measure for the ship?
What will be an ideal response?
When an object is polarized, it
A. must contain more positive charge than negative charge. B. must contain more negative charge than positive charge. C. will have a separation of positive and negative charge. D. must be illuminated by polarized light. E. must be made of metal.