Category: Physics

What is the safest imaging technique? Ultrasound is the safest known medical imaging modality and can be used by nearly every patient with little to no risk. Ultrasound is safe for even unborn fetuses and those who cannot use other modalities. What is a general imaging exam? A type of test that makes detailed pictures […]

How do you determine the freezing point of a solution? The freezing point depression ∆T = KF·m where KF is the molal freezing point depression constant and m is the molality of the solute. Rearrangement gives: mol solute = (m) x (kg solvent) where kg of solvent is the mass of the solvent (lauric acid) […]

Do all things have energy? Everything is energy, and everything is connected to everything else through fi elds. The quantum theory researchers discovered the answer: Not only do particles consist of energy, but so does the space between. This is the so-called zero-point energy. Therefore it is true: Everything consists of energy. Who said everything […]

Is silicone stronger than carbon? Q: Why is carbon better than silicon for life? Carbon bonds tend to be of the same strength, and while silicon forms a very strong and stable first bond, the others are less stable and strong. Why can’t Silicon replace carbon? Although silicon might normally have atoms bonded to each […]

Why is it important to have cash during a recession? Still, cash remains one of your best investments in a recession. If you need to tap your savings for living expenses, a cash account is your best bet. Stocks tend to suffer in a recession, and you don’t want to have to sell stocks in […]

What is condition for no refraction? If the refractive indices are same in both medias then there will be no refraction and light will pass without any refraction. And when the incident ray is striking perpendicular to one media to another the light will pass without any refraction. What are the two requirements for refraction? […]

How do I turn off my HVAC? To fully shut off the air conditioner, you must locate the outside circuit to the condenser unit, which is usually close to it and under a flip lid. Open the lid and switch it to “off.” Next, clean off the condenser unit. You may need to wash it […]

What are the three basic parts of an electric generator? The main components of an electric generator can be broadly classified as follows: Engine. Alternator. Fuel System. Voltage Regulator. Cooling and Exhaust Systems. Lubrication System. Battery Charger. Control Panel. What parts are found in an electric generator? Generators convert a fuel source into usable energy […]

Why am I getting frogs in my house? They say that tree frogs like to climb trees and jump or drop onto the roof of a house. The frogs apparently like the warmth of the shingles. Once they’ve warmed up, frogs start looking for a cooler area, and the toilet vent pipe is often the […]

Is displacement the area under a velocity time graph? The area under a velocity-time graph is the displacement. Velocity can be negative if an object is moving backwards. The displacement can also be negative. An area beneath the x-axis has a negative value. What is a displacement vs time graph? Displacement-time graphs show how the […]