The magnetic field at a distance of 2 cm from a current carrying wire is 4 ?T. What is the magnetic field at a distance of 1 cm from the wire?
A) 2 ?T
B) 4 ?T
C) 6 ?T
D) 8 ?T
E) 10 ?T
D
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The net force on any object moving at constant velocity is
A) zero. B) 10 meters per second squared. C) equal to its weight. D) about half its weight.
A football kicker is attempting a field goal from 44m out. The ball is kicked and just clears the lower bar with a time of flight of 2.9s If the angle of the kick was 45°, what was the initial speed of the ball, assuming no air resistance?
A) 39 m/s B) 2.2 m/s C) 21.5 m/s D) 19.7 m/s
Organisms designated as producers usually obtain their energy from:
a. other producers b. dead consumers c. decomposers d. the environment e. themselves
Series/Parallel Circuits: For the circuit shown in the figure, the battery is ideal and all quantities are accurate to two significant figures. Find the current through (a) the 1.0-? resistor, (b) the 3.0-? resistor, and (c) the 4.0-? resistor?
What will be an ideal response?