The fraction of the U.S. population that dies from cancer is typically
A. about 1 in 10,000
B. about 1 in 1 00
C. about 1 in 5
D. Most of us die from cancer.
Answer: C. about 1 in 5
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On a position-time graph for a particle, suppose the plot starts at some positive position and as the time goes on the curve gets steeper and steeper while curving upwards. Which of the following must be true?
a. The speed of the particle is constant. b. The acceleration of the particle is constant. c. The speed of the particle is decreasing. d. The acceleration of the particle is positive.
The wavelength of the emitted photon when a hydrogen atom makes a transition from the n = 2 state to the ground state is closest to which of the following values? (c = 3.0 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A) 122 nm B) 203 nm C) 243 nm D) 389 nm E) 411 nm
How large a force is necessary to stretch a 2.0 mm radius steel wire (Y = 2.0 × 10^11 N/m2) by 2.0%?
a. 5.0 × 10^4 N c. 2.5 × 10^3 N b. 2.5 × 10^4 N d. 1.3 × 10^4 N
A simple electrical circuit has a constant voltage power supply and a variable resistor as a circuit. As you increase the resistance the current flow _______________
Fill in the blank(s) with correct word