Category: Physics

What is the difference between primary coil and secondary coil? Winding – Transformers have two windings, being the primary winding and the secondary winding. The primary winding is the coil that draws power from the source. The secondary winding is the coil that delivers the energy at the transformed or changed voltage to the load. […]

Can you use AA batteries instead of D? Electrically, one AA could do this job since it runs at the same voltage as a D battery. However, it was easier to combine 4 AA’s into one battery to simulate the size of a D battery and effectively replace it. What does AA battery look like? […]

How do you calculate similar triangles? Calculating the Lengths of Corresponding Sides Step 1: Find the ratio. We know all the sides in Triangle R, and. We know the side 6.4 in Triangle S. Step 2: Use the ratio. a faces the angle with one arc as does the side of length 7 in triangle […]

What are the three factors that affect the formation of reflection? Answer. Factors that affecting the reflection of light are : The angle of refraction, the angle at which the light strikes the surface, and material that the light is hitting. What is Laws of reflection? The law of reflection states that the angle of […]

What are the similarities and differences between arteries and veins? Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation. Arteries and veins are two of the body’s main type […]

What is a good humidity for sleeping? Best Humidity for Sleeping According to the Environmental Protection Agency, the best indoor relative humidity falls between 30% and 50%, and it should never exceed 60%. Other studies suggest 40% to 60% is a better range. What time of day is humidity highest? midnight What time of year […]

How has technology changed our life? Over the years, technology has revolutionized our world and daily lives. Technology has created amazing tools and resources, putting useful information at our fingertips. With all of these revolutions, technology has also made our lives easier, faster, better, and more fun. How does technology affect us positively? These are […]

Is it OK to walk 10 km a day? If you’re just going for general health, then yes, walking 10km every day is a good workout, whether you do it all at once or in chunks throughout the day. If you’re very fat and/or out of shape, then walking is a great exercise to help […]

What is a Category 2 ambulance? Category 2 ambulance calls are those that are classed as an emergency for a potentially serious condition that may require rapid assessment, urgent on-scene intervention and/or urgent transport. For example, a person may have had a heart attack or stroke, or be suffering from sepsis or major burns. What […]

Does magnitude have a sign? A vector is a quantity described by a magnitude and a direction. The magnitude is always +ve or zero. A -ve sign in front of a vector indicates the same magnitude but in the opposite direction. It has a magnitude (which is >= 0) and a direction. What is the […]