A set value for a fundamental quantity is called a(n) ______________ unit

Fill in the blank(s) with correct word


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Physics & Space Science

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Why have more people seen a lunar eclipse than an solar eclipse?

a. Eclipses of the Sun are much rarer than eclipses of the Moon. b. The shadow of the Moon is larger than the shadow of Earth. c. Anyone on the night side of Earth can see a total eclipse of the Moon. d. Anyone on the day side of Earth can see a total solar eclipse.

Physics & Space Science

A ten billion year old globular cluster has every star evolved into a giant, with no main sequence stars left

Indicate whether the statement is true or false

Physics & Space Science

The type of radio galaxy that reveals its motion through the intergalactic medium is called a

A) Seyfert. B) head-tail. C) quasar. D) bipolar jet. E) dual lobe.

Physics & Space Science

A beam of light is incident upon a flat piece of glass (n = 1.50) at an angle of incidence of 60°. Part of the beam is transmitted and part is reflected. What is the angle between the reflected and transmitted rays?

a. 85° c. 107° b. 28° d. 152°

Physics & Space Science