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Questions in physics

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

[Answered] 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

[Answered] 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

[Answered] 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?

[Answered] 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}

[Answered] 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

[Answered] 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

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

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

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