The ________ is the spherical outgassing as a comet nucleus is heated by the Sun. The process by which small debris condenses into planetesimals is ________.

Fill in the blank(s) with the appropriate word(s).


Answer: coma, accretion

Physics & Space Science

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Fluid Flow: Ideal incompressible fluid flows through a 4.0-cm-diameter pipe at 1.0 m/s. There is a 2.0 cm diameter constriction in the line. What is the speed of the fluid in this constriction?

A. 0.25 m/s B. 0.50 m/s C. 2.0 m/s D. 4.0 m/s

Physics & Space Science

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Instructions: On occasion, the notation will be a shorthand notation for . Exhibit 3-1 The three forces shown act on a particle. Use this exhibit to answer the following question(s). Refer to Exhibit 3-1. What is the direction of the resultant of these three forces? A. 35° B. 45° C. 65° D. 55° E. 85°

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An object's distance traveled as a function of time is shown in the graph. The graph shows

A. an object turning in a circle. B. an object with increasing speed. C. an object moving forward. D. an object experiencing an acceleration.

Physics & Space Science

An electron (m = 9.11 × 10^?31 kg) has a speed of 0.50 c. Determine the difference between its relativistic kinetic energy and the kinetic energy calculated without considering relativity

a. 3.0 × 10^?15 J b. 2.0 × 10^?15 J c. 1.5 × 10^?15 J d. 2.4 × 10^?15 J e. 1.8 × 10^?15 J

Physics & Space Science