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

Physics & Space Science

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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).

Physics & Space Science

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

Physics & Space Science

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

Physics & Space Science

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

Physics & Space Science