Explain how is energy transformed in windmills?

928

---

What is fusion?

931

---

What is the rest mass energy of an electron?

943

---

Tell me why is heavy water used as a moderator?

901

---

Tell me how asteroids are formed?

968

---

Explain what is nucleus?

850

---

Explain what is relation between magnetic and electricity and why?

940

---

Explain what is optical medium?

937

---

Explain the working of basic rubber ink filler

950

---

Explain what is the rectilinear propagation of light?

993

---

Explain what is photometry?

932

---

Tell me when taken to the top of a mountain, a clock will go fast or go slow or no change or stop?

915

---

Explain what is h1n1?

973

---

Explain what is the shadows?

955

---

Explain what is the heterogenous?

921

---