The strong force is mediated by:
a. the gluon.
c. the W+ boson.
b. the W– boson.
d. All of these choices.
A
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Ideal Gas Law: On a cold day, you take in 4.2 L of air into your lungs at a temperature of 0°C. If you hold your breath until the temperature of the air in your lungs reaches 37°C, what is the volume of the air in your lungs at that point, assuming the pressure does not change?
A. 4.2 L B. 4.4 L C. 4.6 L D. 4.8 L E. 5.0 L
Two bodies of equal mass m collide and stick together. The quantities that always have equal magnitude for both masses during the collision are
A. their changes in momentum. B. the force each exerts on the other. C. their changes in kinetic energy. D. all of the above. E. only (a) and (b) above.
Three long wires parallel to the x axis carry currents as shown. If I = 20 A, what is the magnitude of the magnetic field at the origin?
a.
37 ?T
b.
28 ?T
c.
19 ?T
d.
47 ?T
e.
58 ?T
Magnification is positive for inverted images
Indicate whether the statement is true or false