How would the radio Earth appear to extraterrestrials?

What will be an ideal response?


Earth would be a stronger source of FM and TV waves than even our Sun. The peak signals would happen when eastern North America was rising or setting for the observer, and the entire pattern would repeat as the Earth rotated.

Physics & Space Science

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a. True
b. False

Physics & Space Science

The density of an object is defined as

A. the volume occupied by each unit of mass. B. the amount of mass for each unit of volume. C. the weight of each unit of volume. D. the amount of the substance that has unit volume and unit mass. E. the amount of the substance that contains as many particles as 12 grams of the carbon-12 isotope.

Physics & Space Science

In an electrically neutral atom the number of protons in the nucleus is equal to the number of

A) electrons that surround the nucleus. B) neutrons in the nucleus. C) both of these D) none of the above

Physics & Space Science

Describe the phenomenon known as diffraction

What will be an ideal response?

Physics & Space Science