Which one of the following is not an area of physics?
a. Mechanics
b. Optics
c. Algebra
d. Acoustics
c
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A 6.0
resistor and a 3.0
resistor are connected in parallel to a 1.5 V battery of negligible internal resistance. What is the current in the 3.0
resistor?
A. 2.0 A B. 0.50 A C. 0.25 A D. 0.17 A E. 0.75 A
An aircraft starts at rest and is accelerated at 10 m/s2 for 30 seconds, at which time the aircraft becomes airborne. What is the distance traveled during the 30 seconds? Assume the acceleration is constant
A converging lens will be prescribed by the eye doctor to correct which of the following?
a. farsightedness b. glaucoma c. nearsightedness d. astigmatism
The radioactive nuclei 60Co is widely used in medical applications. It undergoes beta decay, and the total energy of the decay process is 2.82 MeV per decay event
The half-life of this nucleus is 272 days. Suppose that a patient is given a dose of 6.9 µCi of 60Co. If all of this material decayed while in the patient's body, what would be the total energy deposited there? (1 Ci = 3.70 × 1010 decays/s) A) 11 J B) 8.6 GJ C) 3.9 J D) 24 J E) 4.15 MJ