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… Read More »What is a Transistor in Physics?
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… Read More »What is a Relay in Physics?
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… Read More »Physics Formula Sheet – Physics Calculations
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… Read More »A car accelerates uniformly from rest to a velocity of 30 m/s in 15 seconds
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… Read More »A ball is thrown straight upward with an initial velocity of 25 m/s
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… Read More »A cyclist increases her speed uniformly from 5 m/s to 15 m/s in 20 seconds
A car traveling with a uniform velocity of 20 m/s is subjected to a uniform retardation of 2 m/s²
Question A car traveling with a uniform velocity of 20 m/s is subjected to a uniform retardation of 2 m/s². How long will it take… Read More »A car traveling with a uniform velocity of 20 m/s is subjected to a uniform retardation of 2 m/s²
A particle starts from rest and accelerates uniformly at 2 m/s² for 10 seconds
Question A particle starts from rest and accelerates uniformly at 2 m/s² for 10 seconds. Calculate the distance covered and the final velocity attained. A… Read More »A particle starts from rest and accelerates uniformly at 2 m/s² for 10 seconds
A driver traveling at a speed of 115 km/hr received a text message on his mobile phone.
Question A driver is moving at a constant speed of 115 kilometres per hour when he receives a text message on his mobile phone. We… Read More »A driver traveling at a speed of 115 km/hr received a text message on his mobile phone.
A student walks a distance of 3 km in 20 minutes. Calculate his average speed
Question: A student walks a distance of 3 km in 20 minutes. Calculate his average speed. Quick Answer Average speed = Distance/Time = 3km /… Read More »A student walks a distance of 3 km in 20 minutes. Calculate his average speed
What is Singularity?
Definition In physics, a singularity is a point in spacetime where gravity becomes infinitely strong and the usual laws of physics no longer work. It’s… Read More »What is Singularity?
What is an Event Horizon?
Definition An event horizon is the invisible boundary around a black hole beyond which nothing — not even light — can escape. It’s often called… Read More »What is an Event Horizon?
In fig 23.43 AB represents a uniform beam of weight 150 N which rests with the end B on a rough plane inclined
Question In fig 23.43, AB represents a uniform beam of weight 150 N which rests with the end B on a rough plane inclined at… Read More »In fig 23.43 AB represents a uniform beam of weight 150 N which rests with the end B on a rough plane inclined
Find the value of W and the tensions in the three strings in fig 23.32. CF and DE are horizontal.
Question Find the value of W and the tensions in the three strings in fig 23.32. CF and DE are horizontal. Solution Here is how… Read More »Find the value of W and the tensions in the three strings in fig 23.32. CF and DE are horizontal.
Find the tensions in the three strings and the weight W in fig 23.31
Question Find the tensions in the three strings and the weight W in fig 23.31. AB is horizontal. (Draw an accurate scale figure first. Draw… Read More »Find the tensions in the three strings and the weight W in fig 23.31