Assume that the tile vectors for tiles on the surface shown below point toward us. What is the sign of the current i that flows through this surface?
A. The signed current i is positive.
B. The signed current i is negative.
C. The signed current i is zero.
D. One cannot determine i’s sign from what is given.
A. The signed current i is positive.
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You deposit $500 in a special investment. It doubles to $1000 after 7 years. What was the approximate interest rate paid on the investment?
a. 2% b. 3.5% c. 7% d. 10% e. 15%
An object of mass 0.50 kg is transported to the surface of Planet X where the object's weight is measured to be 20 N. The radius of the planet is 6.0 × 10^6 m. What is the mass of Planet X? (G = 6.67 × 10^?11 N / m2/kg2)
a. 1.80E+18 kg b. 5.40E+24 kg c. 2.16E+25 kg d. 1.80E+18 kg
Pythagoras believed that the underlying rules to understanding the Universe were mathematical
a. True b. False Indicate whether the statement is true or false
Magnetic fields are produced by
a. constant electric currents. b. electric currents that vary sinusoidally with time. c. time-varying electric fields. d. all of the above. e. only (a) and (b) above.