According to inflation theory, parallel lines appear to remain parallel because

A) the universe is so unbelievably large.
B) mass has the effect of balancing the natural curvature of space-time.
C) space is inherently flat.
D) the universe is so very old.


Answer: A

Physics & Space Science

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An ideal transformer has an input voltage of 20,000 V and an output voltage of 260 V. If the input current is 26.0 A, what is the output current?

A. 1.70 A B. 10.0 A C. 100 A D. 200 A E. 2000 A

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A bicycle that travels twice as fast as another when braking to a stop will skid

A) twice as far. B) four times as far. C) eight times as far D) sixteen times as far. E) depends on the bike's mass

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Four equal resistors connected in series have same current and same voltage across each resistor

Indicate whether the statement is true or false

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During a nuclear reaction, the particles involved lose 4.8 × 10-28 kg of mass. How many joules of energy are released by this reaction? (c = 3.00 × 108 m/s)

A) 1.4 × 10-19 J B) 5.3 × 10-45 J C) 2.1 × 10-40 J D) 4.3 × 10-11 J E) 1.6 × 10-36 J

Physics & Space Science