Common household electric current is called alternating current because the current alternates direction within the wires. The voltage V in a typical 115-volt outlet can be expressed by the function Upper V left parenthesis t right parenthesis equals 163 sine omega t , where omega is the angular speed (in radians per second) of the rotating generator at the electrical plant and t is the time measured in seconds. It is essential for electric generators to rotate at precisely 60 cycles per sec. Complete parts Bold left parenthesis a right parenthesis and Bold left parenthesis b right parenthesis . Bold left parenthesis a right parenthesis How many times does the current oscillate in 0.25 sec?
Common household electric current is called alternating current because the current alternates direction within the wires. The voltage V in a typical 115-volt outlet can be expressed by the function Upper V left parenthesis t right parenthesis equals 163 sine omega t , where omega is the angular speed (in radians per second) of the rotating generator at the electrical plant and t is the time measured in seconds. It is essential for electric generators to rotate at precisely 60 cycles per sec. Complete parts Bold left parenthesis a right parenthesis and Bold left parenthesis b right parenthesis . Bold left parenthesis a right parenthesis How many times does the current oscillate in 0.25 sec?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.1: Angles
Problem 48E
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Common household electric current is called alternating current because the current alternates direction within the wires. The voltage V in a typical 115-volt outlet can be expressed by the
Upper V left parenthesis t right parenthesis equals 163 sine omega t
,
where
omega
is the angular speed (in radians per second) of the rotating generator at the electrical plant and t is the time measured in seconds. It is essential for electric generators to rotate at precisely 60 cycles per sec. Complete parts
Bold left parenthesis a right parenthesis
and
Bold left parenthesis b right parenthesis
.
Bold left parenthesis a right parenthesis
How many times does the current oscillate in
0.25
sec?
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