Is a nation's destiny determined by its demographics?
What will be an ideal response?
Answer:
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A 1.0-C point charge is 15 m from a second point charge, and the electric force on one of them due to the other is 1.0 N. What is the magnitude of the second charge? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
A) 25 C B) 1.0 C C) 10 nC D) 0.025 C E) 25 nC
The Earth is 1.49 × 1011 meters from the Sun. If the solar radiation at the top of the Earth's atmosphere is 1340 W/m2, what is the total power output of the Sun?
A. 7.10 × 1027 W B. 2.20 × 1030 W C. 6.62 × 1026 W D. 3.74 × 1026 W E. 2.98 × 1025 W
The starting current in a DC motor is 20. A, but it normally operates on 110. volts with a back EMF of 90. volts
(a) What is the resistance in the windings? (b) What is the current at normal load?
The Hipparcos satellite has extended our accurate parallax distance measurements to over 200 parsecs
Indicate whether the statement is true or false