Four equal charges are located at the corners of a square of side d. If the magnitude of each charge is doubled, then what happens to the resultant force on each charge?
A) It is doubled.
B) It is quadrupled.
C) It increases by a factor of 8.
D) It remains the same.
E) None of the other choices is correct.
B
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The constellations are an ancient heritage handed down for thousands of years as ways to tell stories of mythical heroes and monsters
a. True b. False Indicate whether the statement is true or false
Negative work can be done
a. by friction on the tires while a car is accelerating without skidding. b. by a spring at the bottom of an elevator shaft when it stops a falling elevator. c. by a hand catching a ball. d. by all of the above. e. only by (b) and (c) above.
Spaceman Speff orbits spherical asteroid X with his spaceship. To remain in a circular orbit at 421 km from the asteroid's center, he should maintain a speed of 80 m/s. What is the mass of planet X? (G = 6.67 × 10-11 N • m2/kg2)
A) 4.0 × 1019 kg B) 5.1 × 1017 kg C) 4.0 × 1016 kg D) 5.1 × 1014 kg
An ideal gas is at a temperature of 30
and a pressure of 2.00 atmospheres. What is the number of particles per unit volume of the gas?
a. 
b. 
c. 
d. 
e. 