How many significant figures are in the number 0.010?
A) four
B) three
C) two
D) one
C
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Twenty milliseconds is
a. 0.00002 s. b. 0.0002 s. c. 0.002 s. d. 0.02 s. e. 20000 s.
An electron is released form rest in a region of space where a uniform electric field is present. Joanna claims that its kinetic and potential energies both increase as it moves from its initial position to its final position. Sonya claims that they both decrease. Which one, if either, is correct?
a. Joanna, because the electron moves opposite to the direction of the field. b. Sonya, because the electron moves opposite to the direction of the field. c. Joanna, because the electron moves in the direction of the field. d. Sonya, because the electron moves in the direction of the field. e. Neither, because the kinetic energy increases while the electron moves to a point at a higher potential.
If a hydrocarbon is not aliphatic, it is ______________
Fill in the blank(s) with correct word
An X-ray technician takes an average of ten X-rays per day and receives 2.5 mrad per X-ray. What is the total dose the technician receives in 250 working days?
A) 2.50 rem B) 5.00 rem C) 6.25 rem D) 7.75 rem E) 12.5 rem