Radioactive Decay: Plutonium has a half life of 2.4 × 104 years. How long does it take for 99.0% of the plutonium to decay?
A. 1.6 × 102 y
B. 1.6 × 103 y
C. 1.6 × 104 y
D. 1.6 × 105 y
E. 1.6 × 106 y
Answer: D
You might also like to view...
Supernova remnants _____
a. always contain pulsars, because pulsars supply the ionizing radiation b. often last longer than a pulsar does, so the central pulsar may no longer be visible c. rarely contain pulsars, because pulsar radiation disrupts the remnant d. may not contain a pulsar, if the supernova explosion kicked the pulsar away at high speed e. never contain pulsars
The level at which stream discharge can begin to spill out of the channel into the surrounding area
What will be an ideal response?
A wire that is 1.0 mm in diameter and 3.5 m long stretches 3.5 mm when an 8.0-kg tool is hung from it
(a) What is Young's modulus for the material from this wire is made? (b) What is the effective spring constant for the stretching wire? What will be an ideal response?
The phase angle of an RLC series circuit with an inductive reactance of 200 ?, a resistor of 200 ? and a certain capacitor at 1000 Hz is 40.0°. What is the value of the capacitance in this circuit?
A) 1.95 ?F B) 2.95 ?F C) 3.95 ?F D) 4.95 ?F E) 5.95 ?F