A rocket accelerates due to the force exerted on it by the

a. fuel.
b. oxidizer.
c. exhaust gases.
d. nozzle.
e. booster.


C

Physics & Space Science

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When light is gravitationally red or blue shifted, that which is shifted is

1) wave frequency, 2) wavelength, 3) wave energy, 4) all of these, 5) none of these, and when light is Doppler shifted, that which is shifted is actually 6) wave frequency. 7) wave amplitude. 8) both of these. 9) none of these.

Physics & Space Science

A 2.0-kg block sliding on a frictionless horizontal surface is attached to one end of a horizontal spring (k = 600 N/m) which has its other end fixed. The speed of the block when the spring is extended 20 cm is equal to 3.0 m/s. What is the maximum speed of this block as it oscillates?

a. 4.6 m/s b. 5.3 m/s c. 5.7 m/s d. 4.9 m/s e. 3.5 m/s

Physics & Space Science

The materials that made up the solar nebula can be categorized into these four general types. Rank these materials from left to right based on the temperature at which each would condense into a solid, from highest to lowest. Note: For a substance that does not condense at all, rank it as very low temperature.

What  will be an ideal response?

Physics & Space Science

The Hipparcos mission's observations have given us good data on stars out to about:

A) 100 light years. B) 200 light years. C) 200 parsecs. D) 1000 light years. E) 1000 parsecs.

Physics & Space Science