Find the current as a function of time: A Resistor-inductor circuit with a steady voltage source
Question: A circuit that has a resistor, \(R\), and an inductor, \(L\), which are connected in series with a DC […]
Tag: physics
Gravity and attractive force
What we feel on the earth is the composition of the gravitational acceleration and centrifugal action of earth’s rotation. The […]
What is horse power?
Power is energy per unit time. That’s the efficiency of work. Now here is a question. Which horse power is […]
Physics of rainbow
A rainbow appears in the heavens opposite to the sun and it is caused by the refraction and reflection of the sun’s rays in water droplets. […]
Why is a diamond so glittering?
The surface of the diamond is cut in a particular angle. As a result, when light enters the diamond, the […]
Do you know the perfect number?
A perfect number can be expressed by the sum of its positive divisors except itself. For example, the specified divisors […]
If a major league pitcher throws a ball against gravity, …
Suppose the pitcher can always throw a ball at 100 mi/h. If he throws vertically upward with that speed against […]
Need physics help?
Hi there! Are you taking introductory physics courses? Are you doing well in the class? Do you need any help […]