Category: Physics

What are the different charge distributions? There are three types of charge distributions : a) Linear Charge Distribution. In this distribution the charge is distributed uniformly along a line in a straight line or circumference of a circle. c) Volume Charge Distribution. What is the meaning of charge distribution? A charge distribution is ultimately composed […]

How long would it take to get to Mars with a solar sail? The idea is to yoke a small probe to a solar sail, orbit a laser array, and push the probe toward its destination at speeds far in excess of anything we can attain these days. Lubin estimates a probe weighing only a […]

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 […]

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 […]

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 […]

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 […]

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 do you notice is coming off the dry ice? Initially, the gas is much colder than the surrounding air. The sudden drop in temperature causes water vapor in the air to condense into tiny droplets, forming fog. Only a small amount of fog is visible in the air around a piece of dry ice. […]

What are the bottom two rows of periodic table? The two rows of 14 elements at the bottom of the periodic table are the lanthanides and the actinides, whose positions in the periodic table are indicated in group 3. Who has most rare earth minerals? China How many rare earths are there? 17 elements What […]