QUESTIONS AND ANSWERS

Question The rest energy E of an object with rest mass m is given Einstein’s equation E = mc², where c is the speed of… Read More »The rest energy E of an object with rest mass m is given Einstein’s equation E = mc²

Question The world’s largest cut diamond is the first star of Africa (mounted in the British Royal Sculpture and kept in the tower of London).… Read More »The world’s largest cut diamond is the first star of Africa (mounted in the British Royal Sculpture and kept in the tower of London)

Question The official world land speed record is 1228.0 km/h, set on October 15, 1997, by Andy Green in the jet engine car Thrust SSC.… Read More »The official world land speed record is 1228.0 km/h, set on October

Question A cross-country skier skis 1.00km north and then 2.00km east on a horizontal snow field. How far and in what direction is she from… Read More »A cross-country skier skis 1.00km north and then 2.00km east

Can Light Undergo Total Internal Reflection at a Smooth Interface Between Air and Water? The answer to the question is Yes, light can undergo total… Read More »Can Light Undergo Total Internal Reflection at a Smooth Interface Between Air and Water?

How Are Electromagnetic Waves Different from Mechanical Waves? Electromagnetic waves and mechanical waves represent different modes of energy transfer through space. While they both involve… Read More »How Are Electromagnetic Waves Different from Mechanical Waves?

How Are Magnetic Poles and Electrical Charges Similar? Magnetic poles and electrical charges share several striking similarities that are crucial to understanding the interconnectedness of… Read More »How Are Magnetic Poles and Electrical Charges Similar?

Why Do You Think a Compass Needle Always Points North? The reason why a compass needle always points north lies in the Earth’s magnetic field.… Read More »Why Do You Think a Compass Needle Always Points North?

Introduction The magnetic compass is a remarkable invention that revolutionized navigation and exploration throughout human history. Its humble beginnings can be traced back to ancient… Read More »When Was the Magnetic Compass Invented?

Question A motorcycle is moving at a constant speed of 40 km/h. How long does it take for the motorcycle to travel a distance of… Read More »A motorcycle is moving at a constant speed of 40 km/h

Question If the change in velocity increases, what happens to the acceleration during the same time period. Answer If the change in velocity increases, the… Read More »If the change in velocity increases what happens to the acceleration

Question How far does a car travel in 0.75h if it is moving at a constant speed of 88 km/h? Answer The car covers a… Read More »How far does a car travel in 0.75h if it is moving at a constant speed of 88 km/h?

Question A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a trip… Read More »A train averages a speed of 90 miles per hour across the plains and 37.5 miles per

Question A high-speed drill reaches 2000 rpm in 0.50 s. 1. What is the drill’s angular acceleration? 2. Through how many revolutions does it turn… Read More »A high-speed drill reaches 2000 rpm in 0.50 s

Question The motorcycle is traveling at a constant speed of 76km/h. Determine the magnitude of its acceleration when it is at point A. Answer The… Read More »The motorcycle is traveling at a constant speed of 76km/h.