Category: Physics

Why does a swing stop swinging? When the swing is raised and released, it will move freely back and forth due to the force of gravity on it. The swing continues moving back and forth without any extra outside help until friction (between the air and the swing and between the chains and the attachment […]

Is a shovel a first class lever? No, the shovel is a third-class lever. In such systems, the effort is positioned between the fulcrum and the load. Which class lever is a nutcracker? class 2 Why is a shovel a first class lever? The shovel becomes a lever when you move to pick the dirt […]

What is the best way to identify a igneous rock? Cooling of the magma can occur beneath the surface (plutonic) or on the surface (volcanic). Igneous rocks can be identified by the determination of the composition and texture of the rock. Once these two characteristics have been identified, the Igneous Rock Identification chart is used […]

What does it mean when the moon is really bright? The moon only seems bright in the night sky because it is so close to the earth and because the trees, houses, and fields around you are so dark at night. In fact, the moon is one of the least reflective objects in the solar […]

How do you reduce 5v to 1.2 V? If the current is constant, then use a series resistor of value 3.8/I ohms where I is the current. If the current is variable, then you can use a couple of low value very high wattage resistors in the ratio of 3.8:1.2 connected in series across the […]

What characteristics are used to identify rocks? The following properties are very useful for identification purposes: Hardness. Cleavage. Luster. Color. Streak rock powder. Texture. Structure. What are the common features of rocks? Rocks are made out of minerals and have many different properties, or characteristics. Streak is the color of a rock after it is […]

How do bones muscles and joints work together? Muscles can pull bones, but they can’t push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint. Then, when the movement is completed, the flexor relaxes and the extensor contracts to […]

What is the charge on the other plate of the capacitor? Capacitors do not store charge. Capacitors actually store an imbalance of charge. If one plate of a capacitor has 1 coulomb of charge stored on it, the other plate will have −1 coulomb, making the total charge (added up across both plates) zero. How […]

Which foods are the most nutrient dense? Here are the 11 most nutrient-dense foods on the planet. Salmon. Not all fish is created equal. Kale. Of all the healthy leafy greens, kale is the king. Seaweed. The sea has more than just fish. Garlic. Garlic really is an amazing ingredient. Shellfish. Potatoes. Liver. Sardines. Which […]

What are the two type of physical capital? There are two types of physical capital: fixed capital and working capital. Fixed capital includes those assets which can be used over many years in the process of production like machines in factory, building, tools etc. What are the classification of physical capital? Physical capital is divided […]