A circular coil with 600 turns has a radius of 15 cm. The coil is rotating about an axis perpendicular to a magnetic field of 0.020 T
If the maximum induced emf in the coil is 1.6 V, at what angular frequency is the coil rotating?
A) 0.30 rad/s B) 1.9 rad/s C) 1.4 rad/sec D) 0.60 rad/s E) 0.90 rad/s
B
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The relationship between the rotation of Mercury and its revolution is referred as a(n) _______________
Fill in the blank(s) with correct word
Is pressure a (A) vector or (B) scalar quantity?
(A) Vector quantity (B) Scalar quantity
The Hubble time is expressed as:
A) H × D. B) D/v. C) 1/H. D) H × T. E) the critical density/H.
At extremely high temperatures (e.g., millions of degrees), which of the following best describes the phase of matter?
A) a gas of rapidly moving molecules B) a plasma consisting of positively charged ions and free electrons C) a gas consisting of individual, neutral atoms, but no molecules D) a plasma consisting of rapidly moving, neutral atoms E) none of the above (At these extremely high temperatures, matter cannot exist.)