When an item has been launched into orbit:
a. it no longer falls because the weakening of Earth's gravity with increased height has made it lighter than air.
b. it no longer falls because it is outside the atmosphere.
c. it is kept in orbit by attraction to the Sun and Moon.
d. it continues to fall but its path never reaches the ground.
e. centripetal force from Earth's gravity keeps it from being accelerated toward Earth.
d
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The observed distribution of matter in the Universe is best understood as being caused by ____
a. clumping of dark matter in the early Universe causing clumping of normal matter b. clumping of normal matter in the early Universe causing clumping of dark matter c. simultaneous clumping of normal and dark matter d. large variations in the intensity of the cosmic microwave background e. homogenous expansion of normal and dark matter
What is the capacitive reactance of an 8.00 ?F V capacitor attached to 120 V rms at 60.0 Hz?
A. 166
B. 332
C. 663
D. 480
E. 960
What is the size of an object located at a distance of 1,000 meters and that has angular size A = 4 degrees?
A. about 4,000 meters B. about 11 meters C. about 35 meters D. about 70 meters
Web designers sometimes measure type size in pixels, where 24 pixels equal a 10-point font.
Answer the following statement true (T) or false (F)