Which of the following is a positively charged polyatomic ion?
a. Potassium ion
b. Sulfide ion
c. Ammonium ion
d. Sulfate ion
c
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Force on a Moving Charge: A proton is projected with a velocity of 7.0 km/s into a magnetic field of 0.60 T perpendicular to the motion of the proton. What is the magnitude of the magnetic force that acts on the proton? (e = 1.60 × 10-19 C)
A. 0 N B. 3.4 × 10-16 N C. 4.2 × 10-16 N D. 13 × 10-16 N E. 6.7 × 10-16 N
The scarps on Mercury were probably caused by:
A) tectonic activity. B) meteorite bombardment. C) a tidal bulge. D) volcanism. E) the interior cooling and shrinking.
Two long parallel wires separated by 4.0 mm each carry a current of 24 A. These two currents are in the same direction. What is the magnitude of the magnetic field at a point that is between the two wires and 1.0 mm from one of the two wires?
A. 4.8 mT B. 6.4 mT C. 3.2 mT D. 9.6 mT E. 5.3 mT
In the larger clusters, colliding galaxies tend to pass through one another
Indicate whether the statement is true or false