Reference no: EM13954271
1. A 500-microFarad capacitor is discharged through a 4.7-Mega ohm resistance. What is the time constant?
a. 600 s
b. 300 s
c. 2350 s
d. 1200 s
2. Water in a fish tank is 7.6 feet deep, and a coin rests on the bottom. How far below the surface does the coin appear to be when viewed from above? (Assume a small angle of incidence.)
a. 3.8 feet
b. 5.8 feet
c. 2.6 feet
d. 5.2 feet
3. A myopic person wears eyeglasses with a lens strength of - 5.0 diopters. Where is the far point for that person's eyes?
a. 3.5 m
b. 20 cm
c. 28.6 cm
d. infinity
4. Red light of wavelength 632.8 nm is incident on a pair of slits whose separation is 0.25mm. What is the separation of neighboring interference maxima on a screen 180cm from the slits?
a. 1.5 cm
b. 3.0 mm
c. 4.5 mm
d. 1.2 mm
5. The mean life of muons is 2.2 us. What is the mean life of a beam of muons moving at a speed of 0.945c relative to you?
a. 70 micro.s
b. 2.2 micro.s
c. 0.11 micro.s
d. 6.6 micro.s
6. A sample of Barium isotope has a half-life of 2.5 min and an intial activity of 10 x 10^6 Bq. What is its activity after 25 min have elapsed?
a. 9780 Bq
b. 4600 Bq
c. 19,600 Bq
d. 22,000 Bq
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What is the approximate mass number of a nucleus
: Determine the kinetic energy available to products of alpha decay of 235U92. b) Also find the kinetic energy of the alpha particle. The observed masses are m(235U92) = 235.04392 u and m(231Th90) = 231.03630 u.
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How many strings will contain at least 6 ba s
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Formulate LP to meet the demand and mileage requirements
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Where is the far point for that person eyes
: A sample of Barium isotope has a half-life of 2.5 min and an intial activity of 10 x 10^6 Bq. What is its activity after 25 min have elapsed?
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What should the ideal setup cost and setup time be now
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Organization demonstrates each of these characteristics
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: A Interpreting The New York Times Company's Financial Statements-The 2011 Form 10-K of The New York Times Company includes the following note:
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