The force on a charged particle created by its motion in a magnetic field is maximum at what angle between the particle velocity and field?
a. zero
b. 180°
c. 90°
d. 45°
c
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Resistors of values 7 ?, 15 ?, and 25 ? are connected in parallel across a fresh battery. Which resistor dissipates the greatest power?
a. the 7-? resistor b. the 15-? resistor c. the 25-? resistor d. All dissipate the same power when in parallel.
A charge Q is placed on the x axis at x = +4.0 m. A second charge q is located at the origin. If Q = +75 nC and q = -8.0 nC, what is the magnitude of the electric field on the y axis at y = +3.0 m?
a. 19 N/C b. 23 N/C c. 32 N/C d. 35 N/C e. 21 N/C
The addition of Na2O to SiO2 to form soda glass reduces the _____________of SiO2.
Fill in the blank(s) with the appropriate word(s).
The largest and deepest impact basin found on Mars is:
A) Olympus. B) Caloris. C) Hellas. D) Tharsis. E) Meridani.