Hydrogen fusion does not occur in stars in the giant region of the H-R diagram
a. True
b. False
Indicate whether the statement is true or false
False
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A very long wire carries a uniform linear charge density of 7.0 nC/m. What is the electric field strength 16.0 m from the center of the wire at a point on the wire's perpendicular bisector? (?0 = 8.85 × 10-12 C2/N ? m2)
A) 7.9 N/C B) 3.9 N/C C) 0.49 N/C D) 0.031 N/C
What is the magnitude of the potential difference across the 20-? resistor?
a.
3.2 V
b.
7.8 V
c.
11 V
d.
5.0 V
e.
8.6 V
Consider a 1.40 kW hair dryer operated on 120. V. What is (a) the current? (b) its resistance?
What will be an ideal response?
Specific Heat: In a flask, 114.0 g of water is heated using 67.0 W of power, with perfect efficiency. How long will it take to raise the temperature of the water from 15°C to 25°C? The specific heat of water is 4186 J/kg ? K.
A. 71 s B. 4.1 s C. 17 s D. 320,000 s