A space station in the form of a large wheel, 120 m in diameter, rotates to provide an "artificial gravity" of 3.00 m/s2 for persons located at the outer rim. Find the rotational frequency of the wheel (in revolutions per minute) that will produce this effect


2.14 rpm

Physics & Space Science

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What is a central dominant galaxy?

A) a galaxy around which many other smaller galaxies orbit B) a giant spiral galaxy that exerts large tidal forces on other nearby galaxies C) a spiral galaxy from which many smaller galaxies form when it is stripped apart by tidal forces D) a giant elliptical galaxy at the center of a dense cluster E) a hypothesized galaxy type that no longer exists but once dominated the structure of the universe

Physics & Space Science

The site from which an airplane takes off is the origin. The x axis points east; the y axis points straight up. The position and velocity vectors of the plane at a later time are given by ?   . ? The magnitude, in meters, of the plane's displacement from the origin is

A. 9.14 × 103. B. 1.61 × 104. C. 1.84 × 104. D. 9.14 × 103t. E. 1.61 × 104t.

Physics & Space Science

The source of all electromagnetic waves is

A) changes in atomic energy levels. B) vibrating atoms and molecules. C) accelerating electric charges. D) crystalline fluctuations. E) none of the above

Physics & Space Science

As the speed of a moving fluid increases, the pressure in the fluid

A) increases. B) remains constant. C) decreases. D) may increase or decrease, depending on the viscosity.

Physics & Space Science