Category: Physics

Why does sky turn pink? When the sun sets, it is lower down and the light has further to travel. Blue light can’t travel very far so much of it ‘scatters’ out before it reaches us. But red light can, which is why the sky appears pink. What does a pink sky mean spiritually? Pink […]

What are the causes of hysteresis? Hysteresis loss is caused by the magnetization and demagnetization of the core as current flows in the forward and reverse directions. As the magnetizing force (current) increases, the magnetic flux increases. How does hysteresis affect accuracy? IEC 61298-2 states that accuracy must include Hysteresis, Non-Repeatability and Non-Linearity. Hysteresis is […]

Which perspective considers the relationship between individuals? Contextual perspective considers the relationship between individuals and their physical, cognitive personality, and social words. Contextual perspective is one of the modern psychological perspectives. The psychodynamic perspective is based on Sigmund Freud thought. What are some current issues in lifespan development? Four important issues in lifespan development are […]

Why do bulbs in a series circuit get dimmer? Why bulbs in series are dimmer The current going through them is smaller because two bulbs in series have a higher resistance than a single bulb. Each charge only gives up some of its energy in each bulb, i.e. the p.d. across each bulb is smaller. […]

What is hydrogen bonding What are its types explain with examples? Hydrogen bond is a electrostatic attraction between a hydrogen atom which is bond to a more electronegative atom such as Nitrogen, Oxygen, fluorine. These are two types of hydrogen bonds :- 1) Intermolecular Hydrogen bonding :- It occurs between two separate molecules. Eq :- […]

Can you leave garden hoses out all winter? A: Hoses can be stored outside as long as you make sure to drain all of the water from the hose. Hoses can be drained easily by running them over a tall place where gravity forces water to exit the hose. This ensures that the hose won’t […]

What is under beach sand? Often, underneath the loose sand of a beach is a layer of hard, compacted sand, which could be on its way to becoming sandstone if the necessary cement, pressure and heat ever appear — and if is not eroded by severe storms. What is made from sand? Industrial sand is […]

Can you make magnets spin forever? As the energy in magnets lasts for many years, the wheel is able to rotate and keep on spinning without the need to ever stop, thus the motion of the spinning wheel creates power for many years. This is what makes a magnetic powered generator into a perpetual generator. […]

Is a capacitor a high pass filter? A capacitor can be used as part of a high pass, low pass, or band pass filter, depending on how it’s connected to other parts. For example, a capacitor with a resistor can be a high pass filter: or a low pass filter: Even that by itelf is […]

What should I learn to draw first? The first thing that most drawing tutorials teach you to draw is shapes, starting with a sphere. After all, any object that you see around you can be constructed by using one, or a combination of, three different shapes: A circle – a sphere is a circle in […]