Questions in physics

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

📝 Answered - Which of these prevents conduction from occurring? A. equal masses B. different masses C. equal temperatures D. different temperatures

📝 Answered - "Standard compression" is used to squeeze substances such as hydrogen and helium into a cylinder in the form of... A. a liquid. B. a gas. C. a solid. D. ice.

📝 Answered - A stone initially at rest is dropped from a 72.4 m tall cliff and travels in free fall. What is the final velocity of the stone just before it hits the ground? [tex]v_{f}=[?] m / s[/tex] Do not account for air resistance. Remember, velocity downward is a negative vector (-).

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

📝 Answered - An object traveling in a circular path is accelerating because its A. momentum changes B. direction changes C. mass changes D. speed changes

📝 Answered - Choose all options that apply. Which of the following can happen if electrical wiring isn't large enough to carry the current? a) It will jump when the unit starts. b) The amp draw will be too low. c) It may overheat and cause a fire. d) It may melt the insulation, which could cause an electrical shock.

📝 Answered - What force is required to give an object with mass 2000 kg an acceleration of 3.5 m/s²? A. 10,500 N B. 571 N C. 7000 N D. 2535 N

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

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