Explain the universal law of universal gravitation?

497

---

Tell me how do you calculate shaft power?

529

---

Explain what is a crest?

499

---

Explain what are wave fronts?

512

---

Explain the law of machines?

566

---

Explain what affect does electricity have on soil?

532

---

Explain the characteristics of dead stars?

501

---

Explain what is meant by 4th dimension?

491

---

Explain what is centrifugal force?

528

---

Explain how do fireworks turn into shapes like hearts and stars?

569

---

Explain what is neutral buoyancy?

517

---

Explain how much does automotive oil weigh?

461

---

Name the element which has the simplest absorption spectrum?

476

---

Tell me how are amps and watts related?

484

---

Explain the balanced field takeoff?

521

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