Due to the first strong commercial radio stations, our radio presence has now extended out to approximately 70 light-years
Indicate whether the statement is true or false
TRUE
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Radioactive Decay: A sample containing 4.0 × 1018 atoms of a radioactive isotope decays with a half-life of 2.3 years. How many undecayed atoms are left after 3.7 years?
A. 2.5 × 1018 B. 1.7 × 1018 C. 1.3 × 1018 D. 1.1 × 1018
A quantum of electromagnetic radiation is a __________
Fill in the blank(s) with correct word
A 1.0-?F and a 2.0-?F capacitor are connected in series across a 3.0-V voltage source
(a) What is the charge on the 1.0-?F capacitor? (b) What is the voltage across the 2.0-?F capacitor?
A 3.0-mF capacitor charged to 40 V and a 5.0-mF capacitor charged to 18 V are connected to each other, with the positive plate of each connected to the negative plate of the other. What is the final charge on the 3.0-mF capacitor?
a. 11 mC b. 15 mC c. 19 mC d. 26 mC e. 79 mC