How do you find the refractive index of a liquid by using total internal reflection?

889

---

What is radium used for?

995

---

What is curvilinear motion?

953

---

For projectiles fired at identical speeds but various angles from the ground, neglecting air resistance and the curvature of the earth, at what angle will the maximumhorizontal distance be attained?

904

---

What is the force needed to accelerate a mass of one kilogram one meter per second per second?

953

---

What cycle most directly describes the working cycle of a heat engine operating as an ideal engine of maximum thermal efficiency?

987

---

If the distance separating two charges is doubled, the force between them decreases by what multiple factor?

1024

---

By passing current through a wire wrapped around an iron rod, william sturgeon invented the?

984

---

How do you separate hydrogen and oxygen gases in industrial electrolysis of water process?

999

---

What is ion pair energy?

1178

---

What path does an asteroid take?

1018

---

How do fireworks turn into shapes like hearts and stars?

978

---

What is the general term for the kind of material usually placed between the conducting plates of a capacitor?

941

---

sound frequencies below 16 hertz are usually referred to by scientists as:

984

---

What is an electron?

985

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