In the proton-proton cycle, the positron is
A) massless.
B) a spin conservation particle.
C) an anti-electron.
D) the chief means energy reaches the photosphere.
E) intermediate between the proton and neutron in mass.
C
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Define specific gravity
What will be an ideal response?
A certain ideal gas has a value of ? = 4/3. What is its molar specific heat at constant pressure?
A) 5R/2 B) 2R C) 3R D) 7R/2 E) 4R
If P = 6.0 N, what is the magnitude of the force exerted on block 1 by block 2?
a.
6.4 N
b.
5.6 N
c.
4.8 N
d.
7.2 N
e.
8.4 N
Photoelectric Effect: Light with a frequency of 8.70 × 1014 Hz is incident on a metal that has a work function of 2.80 eV. What is the maximum kinetic energy that a photoelectron ejected in this process can have? (1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s)
A. 8.7 × 10-19 J B. 3.1 × 10-19 J C. 1.3 × 10-19 J D. 2.4 × 10-19 J E. 4.5 × 10-19 J