Nimbus means
a. "poorly formed.".
b. "curl.".
c. "heap.".
d. none of these.
d
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A wire is carrying current vertically downward. What is the direction of the force due to Earth's magnetic field on the wire?
A) horizontally towards the north B) horizontally towards the south C) horizontally towards the east D) horizontally towards the west E) vertically upward
Two solenoids are each made of 2000 turns of copper wire per meter. Solenoid I is 2 m long, while solenoid II is 1 m long. When equal currents are present in the two solenoids, the ratio of the magnetic field BI along the axis of solenoid I to the magnetic field BII along the axis of solenoid II, BI/BII, is
A. 1/4. B. 1/2. C. 1. D. 2 E. 4.
Assume that a uniform magnetic field is directed into this page. If a proton is released with an initial velocity directed from the bottom edge to the top edge of the page, which of the following describes the direction of the resultant force acting on the proton?
a. into the page c. to the right b. to the left d. out of the page
Answer the following statement(s) true (T) or false (F)
1. The space time interval ?s between two events can never be larger than the coordinate time ?t between those events as measured in any inertial reference frame.