A magnetic field will deflect a(n)
a. alpha particle
b. beta particle
c. gamma ray
d. x ray
e. all of the above
A, B
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How fast would you have to travel in order to reach a star that is 50 light-years away from Earth when you are 40 years older than you were when you left Earth? One light-year is the distance light travels in one year
A) 0.58c B) 0.68c C) 0.78c D) 0.88c E) 0.96c
What is the current limit to distances we can measure via parallax, until the results of the new Gaia mission become available?
A) about 100 light years B) about 1000 light years C) about 100,000 light years D) about 10,000 light years
A 15-?F capacitor is connected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric,
having a dielectric constant of 5.0, is inserted between the plates and completely fills the space between them. (a) What is the capacitance of the capacitor after the slab is inserted? (b) What is the potential difference across the capacitor with the dielectric inserted.
The conterminous United States lies predominantly in which wind zone?
a. Westerlies b. Northeast tradewinds c. Polar easterlies d. Doldrums