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What is a Transistor in Physics?
What is a Transistor in Physics? DefinitionA transistor is a tiny semiconductor device used to amplify or switch electronic signals and electrical power. It acts like an electronic gatekeeper, controlling the flow of current between two points depending on the input signal applied to its third terminal. In physics and electronics, the transistor is one… Read More »What is a Transistor in Physics?
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What is a Relay in Physics?
What is a Relay in Physics? Definition A relay is an electrical device that uses a small current to control a much larger current in another circuit. It works as an automatic switch that opens or closes contacts when an electromagnet is energized or de-energized. In simpler terms, a relay allows one circuit (usually low… Read More »What is a Relay in Physics?
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Physics Formula Sheet – Physics Calculations
Physics Formula Sheet – Physics Calculations This is a Physics formula sheet with the list of 150 important physics formulas that will help you to carry out Physics calculations. I have grouped them by topic for clarity: Mechanics1. Speed = Distance / Time2. Velocity = Displacement / Time3. Acceleration = Change in velocity / Time4.… Read More »Physics Formula Sheet – Physics Calculations
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A car accelerates uniformly from rest to a velocity of 30 m/s in 15 seconds
Question A car accelerates uniformly from rest to a velocity of 30 m/s in 15 seconds. Find the acceleration and the total distance covered. Quick Answer Initial velocity u = 0 m/sFinal velocity v = 30 m/sTime t = 15 s Acceleration a = (v – u) / t = (30 – 0) / 15… Read More »A car accelerates uniformly from rest to a velocity of 30 m/s in 15 seconds
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A ball is thrown straight upward with an initial velocity of 25 m/s
Question A ball is thrown straight upward with an initial velocity of 25 m/s.(a) How high does it rise?(b) How long does it take to return to the thrower’s hand? (Take g = 9.8 m/s²) Quick Answer Initial velocity u = 25 m/sFinal velocity at top v = 0 m/sAcceleration a = –9.8 m/s² (a)… Read More »A ball is thrown straight upward with an initial velocity of 25 m/s
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A cyclist increases her speed uniformly from 5 m/s to 15 m/s in 20 seconds
Question A cyclist increases her speed uniformly from 5 m/s to 15 m/s in 20 seconds. Calculate her acceleration and the distance traveled in this time. Quick Answer Initial velocity u = 5 m/sFinal velocity v = 15 m/sTime t = 20 s Acceleration a = (v – u) / t = (15 – 5)… Read More »A cyclist increases her speed uniformly from 5 m/s to 15 m/s in 20 seconds
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