Category: Physics

How many electrons are there with a charge of ΜC? Microcoulomb to Electron Charge Conversion Table Microcoulombs Electron Charge 0.000000000001 μC 6.2415 e 0.00000000001 μC 62.42 e 0.0000000001 μC 624.15 e 0.000000001 μC 6,242 e How many electrons does it take to make 100 ΜC of charge? The number of electrons that make up a […]

Why are the first 3 years of life so important? Recent research confirms that the first five years are particularly important for the development of the child’s brain, and the first three years are the most critical in shaping the child’s brain architecture. They have a direct impact on how children develop learning skills as […]

Does a bullet touch the barrel? Bullets touch the inside of the gun’s barrel during normal operation. There’s rifling inside the barrel that’s supposed to impart spin on the bullet. So the barrel rubs grooves in the bullet (this is how CSI can match a bullet to a gun) but the softer bullet does little […]

Is MRSA hard to get rid of? MRSA is resistant to many antibiotics so it can be difficult to treat. However, there are antibiotics that can treat MRSA and make the infection go away. Your doctor may culture your infection and have the lab test the bacteria to find out which antibiotic is best for […]

At what distance does gravity end? Near the surface of the Earth (sea level), gravity decreases with height such that linear extrapolation would give zero gravity at a height of one half of the Earth’s radius – (9.8 m·s−2 per 3,200 km.) What is SI unit of weight? The SI unit of mass is the […]

What are the equations of motion in circular path? An object executing uniform circular motion can be described with equations of motion. The position vector of the object is →r(t)=Acosωt^i+Asinωt^j, r → ( t ) = A cos ω t i ^ + A sin ω t j ^ , where A is the magnitude […]

What will be the effect on capacity of parallel plate capacitor if the whole space? Completely filling the space between capacitor plates with a dielectric increases the capacitance by a factor of the dielectric constant: C = KCo, where Co is the capacitance with no dielectric between the plates. How can we increase the capacity […]

How do photographers use strobes? You simply punch two numbers into the light meter that you set your camera for (shutter speed and ISO). Then you ‘fire’ your strobe light while holding the light meter in front of your subject. The light meter will display an aperture number. What light is used to reduce shadows? […]

Why can you safely hold your bare hand in a 200 ◦ C oven for a few seconds? The air that immediately exits the oven as you open it indeed has 200°C. But cannot be in contact with your hand for more than a few moments since it raises quickly. This is way to short […]

Why is my phone compass so wrong? Some people have found that the compass recalibrates in the wrong direction after dropping their phone, or their phone compass simply starts to point in the wrong direction over time. Wrong – instead, phone manufacturers have used the motion sensing capabilities of modern smartphones to create a motion-based […]