Most bright blue stars we see with the naked eye are good candidates for life, since they have much larger habitable zones than does the Sun
Indicate whether the statement is true or false
FALSE
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A long straight metal rod has a radius of 2.0 mm and a surface charge of density 0.40 nC/m2. Determine the magnitude of the electric field 3.0 mm from the axis.
A. 18 N/C B. 23 N/C C. 30 N/C D. 15 N/C E. 60 N/C
A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.If two slide projectors are connected in parallel across the same 120-volt source, the current drawn from the source remains at 6 amperes
a. True b. False Indicate whether the statement is true or false
A pure sample of 226Ra contains 2.3 × 10^13 atoms of the isotope. If the half-life of 226Ra = 1.6 × 10^3 years, what is the activity of this sample?
a. 1.4E+10 decays/yr b. 1.0E+10 decays/yr c. 3.2E+2 decays/yr d. 3.7E+16 decays/yr e. 6.2E+6 decays/yr
A neutral atom has an electron configuration of 1s22s22p6. If a neutral atom holds one additional electron, what is the ground state configuration?
A) 1s22s22p63s1 B) 1s22s22p7 C) 1s22s32p6 D) 1s32s32p6 E) none of the given answers