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
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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
Four equal resistors connected in series have same current and same voltage across each resistor
Indicate whether the statement is true or false
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
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