Category: Physics

What does a charged capacitor have that an uncharged capacitor does not? Whenever a charged capacitor is connected to an uncharged capacitor there is a flow of electrons from charged to uncharged until a steady state situation is arrived. I.e. After this no transfer of charge happens i.e. both the capacitors are in equilibrium condition. […]

What is the frequency of a pendulum vibration 40 times in 20 s? 2 Hz What is the time period of one oscillation? The time for one oscillation is the period T. The number of oscillations per unit time is the frequency f. These quantities are related by f=1T f = 1 T . What […]

What is the shape of an irregular galaxy? An irregular galaxy is a galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy. Irregular galaxies do not fall into any of the regular classes of the Hubble sequence, and they are often chaotic in appearance, with neither a nuclear […]

How many electrons can fit in the 4th Shell? 32 electrons Why are there only 8 electrons in the third shell? The electron capacity of the third shell is 8, when there are no shells above it. And that is the case for all elements in the third period. It is only when there are […]

What is the equation for angular size? We can generate another simple formula: Angular size in degrees = (size * 57.29) / distance No doubt you can figure out the formulas for minutes and seconds of arc. What is the diameter of the moon? 3,474.2 km What is the angular diameter of the moon? about 31 […]

Do you really need anti-static wrist strap? It is not vitally important to either your safety, or the safety of your computer’s electrical components that you use an anti-static strap / mat. That being said, it does not hurt anything at all to be using one, and it will definitely help to ensure that everything […]

Does the Firefly 2 plus get you high? “Once you master the draw, the Firefly 2 has the best vapor quality of any portable vaporizer I’ve ever used.” However, once you master the draw, the Firefly 2 has the best vapor quality of any vaporizer I’ve ever used. Full, cloudy hits (if you turn the […]

In which case magnification is less than 1? In a concave mirror, when the distance of the object is less than the focal length, the magnification will be greater than one. When the distance of the object is greater than the focal length, then the magnification is less than one. Can the magnification be less […]

How do you know if something is moving at constant velocity? Motion with Constant Velocity: When an object is moving with constant velocity, it does not change direction nor speed and therefore is represented as a straight line when graphed as distance over time. You can also obtain an object’s velocity if you know its […]

What are the two formulas for refractive index? Refractive index is also equal to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance, or n = c/v. What is the relation between refractive index and thickness? Thus there is no general relation between refractive […]