What is the weak force?
a. Another name for the nuclear force (i.e., the n-n, n-p, p-p) force.
b. The gravitational force at the nuclear level.
c. A nuclear force much weaker than gravitational forces.
d. The force involved in beta decay.
e. The force holding electrons to nuclei.
d
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A 0.600-mm diameter wire stretches 0.5% of its length when it is stretched with a tension of 20 N. What is the Young's modulus of this wire?
A) 5.66 × 1010 N/m2 B) 3.54 × 109 N/m2 C) 1.41 × 1010 N/m2 D) 6.43 × 109 N/m2 E) 2.78 × 109 N/m2
When a 35.0-? resistor is connected across a 4.50-V battery, a current of 500 mA flows. What is the power output delivered by the emf of the battery?
a. 613 W b. 140 W c. 8.75 W d. 4.38 W e. 306 W
How can an old pulsar have a very short pulsar period, say less than 0.03 seconds?
What will be an ideal response?
How might the odd tilt of Uranus have been produced?
What will be an ideal response?