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
Question 2
The focal lengths of the objective lens and the eyepiece of a microscope are 0.50 cm and 2.0 cm, respectively, and their separation adjusted for minimum eyestrain is 6.0 cm.
If the microscope is focused on a small object, what is the distance between the object and the objective lens?
A) 0.73 cm B) 0.31 cm C) 0.57 cm D) 0.49 cm E) 0.42 cm
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