Small rocky bodies with compositions similar to Earth that are in orbit around the Sun are called ________
Fill in the blank(s) with correct word
meteoroids or asteroids
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__________is a number between 1 and 0 that describes the shape of an ellipse
A) Acceleration B) Momentum C) Mass D) Eccentricity
A particle whose mass is 2 kg moves in the xy plane with a constant speed of 3 m/s in the x direction along the line y = 5. What is its angular momentum (in kg?m2/s) relative to the origin?
A.
B.
C.
D.
E.
A solid object is made of two materials, one material having density of 2000 kg/m3 and the other having density of 6000 kg/m3 . If the object contains equal masses of the materials, what is its average density?
a. 3000 kg/m3 c. 5000 kg/m3 b. 3200 kg/m3 d. more information is needed
A satellite moves east, taken as the positive x axis direction, at a speed of 0.5 c and a spaceship moves toward it (to the west) at a speed of 0.8 c as measured by an observer on the Earth. The speed of the satellite measured by an observer in the spaceship is
a. 8.7 c b. 0.21 c c. -0.21 c d. 0.93 c e. -0.93 c