In a Young's double-slit experiment, by how many wavelengths do the paths from the slits to the screen differ for the m = 3 and the m = 8 minima?
a. 10
b. 2.5
c. 5
d. Some other value than those given since this is for destructive interference.
C
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How many and what types of quarks are there in the standard model?
A) 6: up, down, top, bottom, strange, charmed B) 2: up, down C) 4: up, down, top, bottom D) 6: up, down, left, right, weird, enchanted E) 4: up, down, left, right
In an RC circuit, how many time constants must elapse if an initially uncharged capacitor is to reach 80% of its final potential difference?
a. 2.2 b. 1.9 c. 1.6 d. 3.0 e. 5.0
Calorimetry: A 90-g aluminum calorimeter contains 390 g of water at an equilibrium temperature of 20°C. A 160-g piece of metal, initially at 305°C, is added to the calorimeter. The final temperature at equilibrium is 32°C. Assume there is no external heat exchange. The specific heat capacities of aluminum and water are 910 J/kg ? K (aluminum) and 4190 J/kg ? K (water). What is the specific heat capacity of the 160-g piece of metal?
A. 470 J/kg ? K B. 430 J/kg ? K C. 350 J/kg ? K D. 310 J/kg ? K E. 510 J/kg ? K
Why are massive stars more luminous than low mass stars? That is, why is there a mass-luminosity relation?
What will be an ideal response?