Category: Physics

How do you calculate the de Broglie wavelength? Apply the de Broglie wave equation λ=hmv λ = h m v to solve for the wavelength of the moving electron. Step 3: Think about your result. This very small wavelength is about 1/20th of the diameter of a hydrogen atom. Looking at the equation, as the […]

What are the units of contraction in a muscle called? The unit of contraction in a muscle cell is called Sarcomere. Is a fascicle a motor unit? Motor Unit Anatomy A skeletal muscle fascicle consists of 20 to 60 fibers surrounded by a connective tissue sheath. A single muscle fiber is innervated by only one […]

Which layer of the endometrium is the functional layer? The uterus is made up of an external layer of smooth muscle called the myometrium, and an internal layer called the endometrium. The endometrium has three layers: stratum compactum, stratum spongiosum (which make up the stratum functionalis) and stratum basalis. Which of the following is a […]

Which two points on the wave are out of phase? The wavelength of a wave is the distance between any two adjacent points that are in phase. Points that are not in phase, those that are not separated by a complete number of wavelengths, are called out of phase. Examples of points like these would […]

How many hours should AC run per day? A properly sized system should run non stop for 24 hours on the hottest day of the year. Well it should run the entire time that the peak load is occuring . This may be for 8 hours or so but will not be for 24 hours. […]

What is the frequency of 500 nm wavelength light? What can be said about the frequency of the wave? Solution: Given, the wavelength of the photon particle = 500 nm. In order to calculate the frequency of the photon particle, we use the formula given above. The frequency of the wave is equal to 6×10-4 […]

Is wood a good energy source? Wood is considered humankind’s very first source of energy. Today it is still the most important single source of renewable energy providing about 6 percent of the global total primary energy supply. Wood energy is also an important emergency backup fuel. … What is the majority of wood used […]

What is the difference between skill and skill related physical fitness? Health-related fitness activities can be integrated into everyday activities that are often characterized as lifetime activities. In contrast, skill-related physical fitness includes health-related components, but it also covers components related to physical performance. How do you develop skill related physical fitness? Traditionally, skill related […]

What is load measured in? The resistance (R) of a resistive load is measured in Ohms (Ω) and the power is measure in Watts (W). How big of a beam do I need to span 12 feet? When supporting joists that span 12 feet with no overhang beyond the beam, a double ply beam can […]

Why is a neutral object attracted to a negatively charged object? Neutral object are attracted to either charge. The region that has too many electrons is negatively charged, the other region positively, because of lack of electrons. The positive region since it is closer to the charge will be attracted to this charge. This process […]