HotelInfantesAgres - Tempat Tanya Jawab Pelajaran & Ilmu Pengetahuan Logo

Questions in physics

[Jawaban] Why do planets revolve around the Sun? A) The Sun's gravity pulls the planets in orbit around it. B) Conservation of angular momentum. C) Conservation of energy. D) Action of God.

[Jawaban] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Jawaban] Which two factors determine the amount of work done? A. energy and motion B. power and distance C. distance and force D. motion and time

[Jawaban] The atmospheric pressure is 10^6 dyne/cm². What is its value in SI unit? A. 10^5 newton/m² B. 10^6 newton/m² C. 10^4 newton/m² D. 10^3 newton/m²

[Jawaban] A Carnot engine receives 4000 J of heat from a reservoir at 500 K, does some work, and rejects 2000 J heat to a reservoir at 200 K. (a) How much work does it do? (b) What is its efficiency?

[Jawaban] A current of i ampere is flowing in an equilateral triangle of side a. The magnetic induction at the centroid will be: (1) \frac{\mu_0 i}{3\sqrt{3} \pi a} (2) \frac{3\mu_0 i}{2\pi a} (3) \frac{5\sqrt{2} \mu_0 i}{3\pi a} (4) \frac{9\mu_0 i}{2\pi a}

[Jawaban] How do objects and atoms gain charge? A. The protons move around to change charge of an atom/object B. The neutrons move around to change charge of an atom/object C. The electrons move around to change charge of an atom/object D. All of the above E. False question. The atom/object always have their own charge, nothing moves around to charge them F. None of the above

[Jawaban] Which type of waves can be used to clear a blockage from small tubes in the kidneys? A. sound waves and visible light B. X-rays and radio waves C. radio waves and sound waves D. visible light and X-rays

[Jawaban] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Jawaban] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?