Free Fall: Human reaction time is usually greater than 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect the ruler to fall before you catch it, assuming negligible air resistance?
A. At least 3.0 cm
B. At least 4.9 cm
C. At least 6.8 cm
D. At least 9.8 cm
Answer: B
You might also like to view...
If R = 4.0 k?, C = 3.0 mF, ? = 15 V, Q = 12 mC, and I = 2.0 mA, what is the potential difference Vb ? Va?
a.
+3.0 V
b.
?19 V
c.
?3.0 V
d.
+27 V
e.
+21 V
A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. The corresponding Celsius temperature is:
A. 574? C B. 232? C C. 301? C D. 614? C E. 276? C
A simple pendulum of length 2.00 m is used to measure the acceleration of gravity at the surface of a distant planet. If the period of such a pendulum is 7.00 s, what is the acceleration of gravity?
A) 7.89 m/s2 B) 6.78 m/s2 C) 1.61 m/s2 D) 0.513 m/s2 E) 17.8 m/s2
Perhaps the most fundamental role that enzymes play in living cells is
A) attacking foreign bodies like bacteria and viruses B) carrying oxygen across cell membranes C) facilitating the replication of DNA and the reading of the genetic code D) the breaking down of more complex molecules