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Telescope A has an aperture of 15 cm while Telescope B that of 5 cm.  How many times of light gathering power does Telescope A have compared with Telescope B?

If the rest wavelength of a certain line is 600 nm, but we observe it as 594 nm.  Then

The planet shown in the drawing obeys Kepler’s Second Law.  At which lettered position is the planet moving with a fastest speed?

Charity and social causes use _____________ to raise support and financial support through websites and social media.

Which theory explains how we use technology creatively to compensate for the lack of nonverbal cues of computer-mediated communication?

When a speaker does not vary his pitch, it is known as being _______________.

El aimara es una lengua oficial de Perú.

The ______________ fallacy advances an argument that cannot be proven because there is no valid evidence.

_____________ is presenting someone else’s intellectual property as your own.

Algunos parques ofrecen wifi.