How many quark flavors are there?

a. 1 b. 3
c. 6 d. none of the above


c

Physics & Space Science

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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

Physics & Space Science

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 ?

Physics & Space Science

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

Physics & Space Science

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

Physics & Space Science