A potential divider is a simple circuit that uses resisters(or thermistors / LDR’s) to supply a variable potential difference. They can be used as audio volume controls, to control the temperature in a freezer or monitor changes in light in …
Kirchhoff’s first law is based on the conservation of charge because sum of current entering to the junction is equal to sum of current leaving the junction. Kirchhoff’s second law states that the algebraic sum of potential drops in a …
What is the maximum force of static friction between a block of ice that weighs 930 N and the ground if μs = 0.12? What is the coefficient of static friction if it takes 34 N of force to start …
A golfer practising on a range with an elevated tee 4.9 m above the fairway is able to strike a ball so that it leaves the club with a horizontal velocity of 20 m s–1. (Assume the acceleration due to …
Basic suvat questions A dog strapped to a trolley is accelerated uniformly from rest, so that after 10 seconds it has achieved a speed of 15 m.s-1. Find its acceleration and the distance it has covered. A car accelerates uniformly …