How many quark flavors are there?
a. 1 b. 3
c. 6 d. none of the above
c
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There is a mass-luminosity relationship because stars support their weight by generating energy, and more massive stars have more weight to support
a. True b. False Indicate whether the statement is true or false
Resistance and Resistivity: The resistivity of the material of a wire is 1.76 × 10-8 ? ? m. If the diameter of the wire is 2.00 mm and its length is 2.00 m, what is its resistance?
A. 112 ? B. 11.2 ? C. 1.12 ? D. 0.112 ? E. 0.0112 ?
Which part of the electromagnetic spectrum generally gives us our best views of stars forming in dusty clouds?
A) infrared B) visible light C) ultraviolet D) blue light
You walk 53 m to the north, then you turn 60° to your right and walk another 45m Determine the direction of your displacement vector. Express your answer as an angle relative to east
A) 57° N of E B) 50° N of E C) 69° N of E D) 63° N of E