Category: Physics

How can you classify mixture? Mixtures can be classified on the basis of particle size into three different types: solutions, suspensions, and colloids. The components of a mixture retain their own physical properties. These properties can be used to separate the components by filtering, boiling, or other physical processes. Can you still recognize salt from […]

What are the effects of gravity on the movement of objects? Earth’s gravity affects the motion of all the objects we see in daily life by accelerating them toward the center of the earth. Therefore, to efficiently process object motion the human visual system needs to consider gravity. How is gravity related to mass? Since […]

What is photosynthesis answer in one line? Photosynthesis is the process by which plants and some microorganisms make substances like carbohydrates. It is an endothermic (takes in heat) chemical process that uses sunlight to turn carbon dioxide into sugars. The sugars are used by the cell as energy, and to build other kinds of molecules. […]

What type of object a chair a painting and a shoe are? Objects like a chair, a painting, or a shoe do not have their own light. We see these when light from a luminous object (like the Sun, a torch, or an electric light) falls on these and then travels towards our eye. Why […]

Why does temperature pressure and density decrease with altitude? Altitude is height above sea level. The density of air decreases with height. There are two reasons: at higher altitudes, there is less air pushing down from above, and gravity is weaker farther from Earth’s center. So at higher altitudes, air molecules can spread out more, […]

What are the factors affecting the height of the waves? Wave height is affected by wind speed, wind duration (or how long the wind blows), and fetch, which is the distance over water that the wind blows in a single direction. If wind speed is slow, only small waves result, regardless of wind duration or […]

Is pitch and note the same? Pitch is the high or low frequency of a sound. When you sing, you create pitch because your vocal cords vibrate at a certain speed. Notes are musical symbols that indicate the location of a pitch. Tone is the color or timbre of pitch. Can a sound have no […]

Why does cooling rate affect crystal size? As the rate of cooling increases, crystal size decreases. This means that something which cools very quickly will have smaller crystal formations, and something which cools slowly will have larger crystal formations. This is easily seen in igneous rock, which may cool at variable rates. What factors affect […]

How long can you live with ischemic heart disease? On average, women live longer than men with heart disease. At age 50 women can expect to live 7.9 years and men 6.7 years with heart disease. The average woman experiences heart disease onset three years older and heart attacks 4.4 years older than men. Can […]

What is an example of a cultural control of pests? 4 Cultural Control. Cultural pest control refers to the manipulation of the crop production system or cultural practices to reduce or eliminate pest populations. Practices such as adjusted planting dates and crop rotations have long been recognized at the local or farm level to avoid […]