Historically, there is no link between increased CO2 levels and higher average temperatures
Indicate whether the statement is true or false
FALSE
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If the amplitude of the motion of a simple harmonic oscillator is doubled, by what factor does the frequency of the oscillator change?
A) 2 B) 4 C) 1 D) 1/2 E) 1/4
Refer to the identical lamps above. If the current in lamp 1 is one ampere, then the current in lamp 2 is
1) 1/2 ampere, 2) 1/3 ampere, 3) 1 ampere, 4) 2 amperes, and the total current in the lamps and in the dry cell is 5) 0. 6) 1/2 ampere. 8) 1/3 ampere. 9) 1 ampere. 10) 3 amperes.
Intensity of Sound: The intensity at a distance of 6.0 m from a source that is radiating equally in all directions is 6.0 × 10-10 W/m2. What is the power emitted by the source?
A. 2.1 × 10-8 W B. 2.7 × 10-7 W C. 2.1 × 10-6 W D. 2.7 × 10-5 W
The position of an object as a function of time is given by x = - ct, where b = 2.0 m/ and and x and t are in SI units. What is the instantaneous velocity of the object when
A) 1.7 m/s B) 2.1 m/s C) 2.3 m/s D) 2.7 m/s