QUESTIONS AND ANSWERS

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.

Question A motorist travelling with a constant speed of 15 m/s (about 34 mi/h) passes a school-crossing corner, where the speed limit is 10 m/s… Read More »A motorist travelling with a constant speed of 15 m/s

Question A motorcyclist heading east through a small Iowa city accelerates after he passes the signpost marking the city limits. His acceleration is a constant… Read More »A motorcyclist heading east through a small Iowa city accelerates after he passes

Question An astronaut has left an orbiting spacecraft to test a new personal manoeuvring unit. As she moves along a straight line, her partner on… Read More »An Astronaut Has Left an Orbiting Spacecraft to Test

Question The nuclear mass of 141ba is 140.883 amu. calculate the binding energy per nucleon for 141ba. Answer The final answer to the above question… Read More »The nuclear mass of 141ba is 140.883 amu. calculate the binding energy per nucleon for 141ba.

Question The nuclear mass of 37cl is 36.9566 amu. calculate the binding energy per nucleon for 37cl. Answer The final answer to the above question… Read More »The nuclear mass of 37cl is 36.9566 amu. calculate the binding energy per nucleon for 37cl.

Question An object of mass 0.40kg attached to the end of a string is whirled round in a horizontal circle of radius 2.0m with a… Read More »An object of mass 0.40kg attached to the end of a string is whirled round

Question If a wheel 1.2m in diameter rotates at one revolution per second. Calculate the velocity of the wheel. Answer The velocity of the wheel… Read More »If a wheel 1.2m in diameter rotates at one revolution per second

Question A force F required to keep a 5 kg mass moving round a cycle of radius 3.5 m at a speed of 7 ms-1.… Read More »A force F required to keep a 5 kg mass moving round a cycle of radius 3.5 m at a speed