A telescope with an 8-inch mirror will collect twice as much light as one with a 4-inch mirror
Indicate whether the statement is true or false
FALSE
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Electrical resistivity and electrical _________are both material properties independent of the specimen geometry, and they are inversely related to each other.
Fill in the blank(s) with the appropriate word(s).
The centroid of the assemblage of lines shown in the figure below is at coordinates (x, y, z):
(A) L/2, L/3, L/2
(B) L/2, L/6, L/6
(C) L/2, L/6, L/4
(D) L/2, L/3, L/6
In South Africa, it's usually quite warm around the time of the December solstice and quite cool around the time of the June solstice
Indicate whether the statement is true or false
A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 4.0 cm. If a timer is started when its displacement is a maximum (hence x = 4 cm when t = 0), what is the speed of the mass when t = 5 s?
a. zero c. 0.016 m/s b. 0.0065 m/s d. 0.024 m/s