In the U.S. AC line voltage oscillates at a frequency of
a. 50 Hz. b. 60 Hz.
c. 120 Hz. d. none of the above.
b
Physics & Space Science
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The position of an object that is oscillating on an ideal spring is given by x = (17.4 cm) cos[(5.46 s-1)t]. Write an expression for the acceleration of the particle as a function of time using the cosine function
What will be an ideal response?
Physics & Space Science
Which is most responsible for the ocean tides?
A) the Moon B) the Sun C) Both contribute equally.
Physics & Space Science
An electric motor on an airplane operates on 24 volts and draws a current of 15 amperes. (a) What is the power consumption of the motor? (b) How much energy does the motor use during a 2 hour flight?
Physics & Space Science
A strong magnetic field easily penetrates
A) human flesh. B) plastic coatings. C) both of these D) none of the above
Physics & Space Science