The mean life (time constant) of rubidium-86 is 26.8 d. What is its half-life?
What will be an ideal response?
18.6 d
You might also like to view...
The image produced by a single diverging lens will ALWAYS be
A. inverted and virtual. B. erect and real. C. erect and virtual. D. inverted and real. E. at infinity.
A resistor and a capacitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capacitor is
A) greater than the battery's terminal voltage. B) equal to the battery's terminal voltage. C) less than the battery's terminal voltage, but greater than zero. D) zero.
How wide must a narrow slit be if the first diffraction minimum occurs at ±12° with laser light of 633 nm?
a. 3.0 × 10^-6 m b. 3.0 × 10^-5 m c. 6.1 × 10^-6 m d. 6 .1× 10-5 m e. 1.5 × 10^-6 m
A doorbell has an input voltage of 120 V. A transformer that steps the voltage down to 12 V has 500 turns on its primary. What is the number of turns on the secondary?