Category: Physics

What are two kinds of reflection? The reflection of light can be roughly categorized into two types of reflection. Specular reflection is defined as light reflected from a smooth surface at a definite angle, whereas diffuse reflection is produced by rough surfaces that tend to reflect light in all directions (as illustrated in Figure 3). […]

What is the 11 year sun cycle? The Short Answer: The Sun’s magnetic field goes through a cycle, called the solar cycle. Every 11 years or so, the Sun’s magnetic field completely flips. This means that the Sun’s north and south poles switch places. Then it takes about another 11 years for the Sun’s north […]

How much clearance do you need in front of disconnect? The minimum working space height required for the disconnect switch is 61/2 feet (see Figure 6). The minimum working space height for electrical equipment has not always been 61/2 feet. For many years, the working space height (or headroom) was required to be at least […]

How many feet do you fall per second? 32 feet What is the use of per second? Per second per second is defined as that the speed something is moving is increasing so many meters per second in every second. Why is 1 second a second? Today, one second is defined as “9,192,631,770 periods of […]

What is the normal freezing point of water? 32 °F. What is the normal freezing? The normal freezing point is the temperature at which a substance melts (or freezes) at one atmosphere (760 torr = 760 mm Hg = 14.7 psi = 101.3 kPa) of pressure. How do you find the normal freezing point? Freezing […]

What wavelength are colors? A spectrally pure or monochromatic color can be produced by a single wavelength. For example, an orange color is associated with a wavelength of 600 nm….Nature of Color. Spectral region Range of wavelength in nm Subregion Visible 380-430 430-500 500-520 520-565 565-580 580-625 625-740 Violet Blue Cyan Green Yellow Orange Red […]

Is table salt in water a colloid suspension or true solution? When the salt is thoroughly mixed into the water in this glass, it will form a solution. The salt will no longer be visible in the water, and it won’t settle to the bottom of the glass. A colloid is a homogeneous mixture with […]

How do I fill in multiple blanks in canvas? Creating a Fill in Multiple Blanks Question for a Quiz Choose Fill in Multiple Blanks from the Question Type dropdown menu. Enter the question. Click the dropdown menu next to Show Possible Answers for and choose one of the blanks. Enter a possible answer. Is canvas […]

Does a step up transformer have more windings? A transformer that increases the voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a step-up transformer. Conversely, a transformer designed to do just the opposite is called a step-down transformer. What is the turns ratio of a transformer What can […]

Which method has been used only once? The method of formal amendment that has only been used once is through a proposition by Congress and which is then ratified through conventions, in 3/4 of the states. This was used for the 21st amendment. Why is amending the constitution difficult? The founders made the amendment process […]