The throbbing caused by sounds of slightly different frequencies that results because of periodic constructive and destructive interference is called:

1139

---

If a dog rolled around on a carpet and gets statically and a flea jumps on it will the flea get electrocuted?

1018

---

Why does heated air expand?

1000

---

Who determined that the square of a planets period is proportional to the cube of its average distance from the sun?

984

---

Why does a tea kettle sing?

1004

---

What is astrophysics?

1037

---

the fundamental forces of nature are most correctly given as?

970

---

What is a crest?

1100

---

What is a thermal transformation?

1114

---

What evidence is there supporting the big bang theory?

946

---

If the moons orbit is inclined slightly relative to the earths orbit what effect does this have on eclipses?

1145

---

How are amps and watts related?

1092

---

A color made from the addition of two primary colors is called:

1177

---

what is the name of the device that is made by combining two basic types of solid state rectifiers allowing the device to both rectify and amplify a current?

1008

---

Considering the specific heat of aluminum is 0.21, iron is 0.10, and lead is 0.03, which metal will show the largest increase in temperature per calorie added to onegram of that metal?

1034

---