Category: Physics

What is the wavelength of green light? 550 What color laser is the strongest? green lasers What is the difference between a Class 3 and Class 4 laser? So what’s the difference between class III and class IV lasers? The biggest difference is their maximum power output. The FDA defines a class IIIb laser as […]

Why is hydroxide written as OH? It’s written in “reverse order” because hydroxide is a polyatomic ion that still needs balance to be part of a compound. In most cases, when OH bonds to another ion the oxygen is the one that bonds to the other ion. Because of this it’s is written as OH, […]

What 3 things can be used to measure volume? Chemists use beakers, flasks, burets and pipets to measure the volume of liquids. What are 3 ways to measure the volume of an object? Measure length, width, and height and multiply. 4. How would you calculate the volume of an irregular sized object like a rock? […]

What are some examples of salinity? Primary salinity occurs naturally in soils and waters. Examples of naturally occurring saline areas include salt lakes, salt pans, salt marshes and salt flats. Secondary salinity is salting that results from human activities, usually land development and agriculture. What is the meaning of salinity? Salinity (/səˈlɪnɪti/) is the saltiness […]

Why are outlets never wired in series? But, in fact, all household receptacles are always wired in parallel, and never in series. In a series circuit, current must pass through a load at each device. And if the appliance in the first receptacle shorted out or failed in some other way, it would interrupt the […]

What is time period of a simple pendulum? The time period of a simple pendulum: It is defined as the time taken by the pendulum to finish one full oscillation and is denoted by “T”. Length of a simple pendulum: It is defined as the distance between the point of suspension to the centre of […]

What is the volume of 1 drop of blood? about 61.6 μL How much blood do you make a day? The average healthy adult produces anywhere from 400 to 2,000 milliliters a day. Or on average, 34,400 liters in a lifetime. That’s enough to fill 46 hot tubs, gross. Now, that might seem impressive, but […]

When two or more systems are in thermal equilibrium with each other they will have the same temperature? In other words, if two objects are in thermal equilibrium, they have the same temperature. If thermometer A is in thermal equilibrium with object B, and B is in thermal equilibrium with C, then A is in […]

What heart rate should I aim for when running? You can determine your target heart rate for running using a formula based on your age and maximum heart rate. When running, you should train at 50 to 85 percent of your maximum heart rate. To calculate the maximum rate, subtract your age from 220. What […]

What is the mass of 50 mL? Weight of 50 Milliliters of Water 50 Milliliters of Water = 50.00 Grams 1.76 Ounces 0.11 Pounds 0.05 Kilograms What is the density of 80 mL of water? The density of water is roughly 1 gram per milliliter but, this changes with temperature or if there are substances […]