Category: Physics

Why is NY the Empire State? New York is called “The Empire State” because of its wealth and variety of resources. This nickname appeared on New York license plates from 1951 through the mid-1960s. In 2001, “The Empire State” legend returned to New York license plates. Why is NY called the Big Apple? The nickname […]

Should I turn left or right? When you’re making a left-hand turn, you should always give the right-of-way to drivers who don’t have stop signs or yield signs. If you’re turning left at a green light, pull out into the intersection but wait to turn left until all oncoming traffic has passed. Which lane do […]

Which bone would take the longest to heal? A fracture of the upper arm or humerus may heal uneventfully in several weeks, while a fracture in the forearm takes much longer. The femur, or thighbone, is the longest and strongest bone in the body and difficult to break without major trauma. What are the two […]

What is the most common type of aquifer? There are two general types of aquifers: confined and unconfined. Confined aquifers have a layer of impenetrable rock or clay above them, while unconfined aquifers lie below a permeable layer of soil. How do you check underground water level? The ground penetrating radar (GPR) system is used […]

What happens to voltage and current in a closed circuit? In a closed circuit, the electric current flows and the voltage is always: – Different from zero for the battery or electric generator. – Different from zero for a lamp, a motor, a resistance or a bypass diode. – Zero for a connecting wire or […]

How do I know who I really am? 6 Steps to Discover Your True Self Be quiet. You cannot and will not be able to know yourself until you take the time to be still. Realize who you truly are, not who you want to be. Find what you are good at (and not good […]

Is high salinity bad? If the level of salts in the soil water is too high, water may flow from the plant roots back into the soil. This results in dehydration of the plant, causing yield decline or even death of the plant. Crop yield losses may occur even though the effects of salinity may […]

Does speed increase as pressure increases? Bernoulli’s Principle states that as the speed of a moving fluid increases, the pressure within the fluid decreases. Does increasing pressure increase speed? In this case when the gas is compressed to half the volume, the pressure is doubled. Therefore for such case, speed of the gas particles remains […]

Can you fall off the moon? Although you can jump very high on the moon, you’ll be happy to know that there’s no need to worry about jumping all the way off into space. In fact, you’d need to be going very fast – more than 2 kilometres per second – to escape from the […]

Why is the current atomic model called the electron cloud? The modern model is also commonly called the electron cloud model. That’s because each orbital around the nucleus of the atom resembles a fuzzy cloud around the nucleus, like the ones shown in the Figure below for a helium atom. The densest area of the […]