Category: Physics

What is sliding friction with example? Specific examples of sliding friction include: Rubbing both hands together to create heat. A sled sliding across snow or ice. Skis sliding against snow. A person sliding down a slide is an example of sliding friction. What is the formula for sliding friction? The coefficient of friction (fr) is […]

What can a green leaf be compared to? A green leaf is compared to a factory as it manufactures food for the plant. Does photosynthesis occur in leaves? In plants, the process of photosynthesis takes place in the mesophyll of the leaves, inside the chloroplasts. Chloroplasts contain disc-shaped structures called thylakoids, which contain the pigment […]

Why is it important to use scientific method? The scientific method attempts to minimize the influence of bias or prejudice in the experimenter. Even the best-intentioned scientists can’t escape bias. That’s the job of the scientific method. It provides an objective, standardized approach to conducting experiments and, in doing so, improves their results. Why is […]

Which is hotter magma or lava? When geologists refer to magma, they’re talking about molten rock that’s still trapped underground. If this molten rock makes it to the surface and keeps flowing like a liquid, it’s called lava. They’re also the hottest variety of magma, reaching temperatures between 1,800 degrees to 2,200 degrees Fahrenheit. Whats […]

What cells do plants have that animals don t? Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not. Why are plant cells Square? Plant cells […]

What note is 786 Hz? The frequency of the third harmonic of middle C is 3 X 262 Hz = 786 Hz. These harmonic frequencies are the same no matter what instrument produces the middle C. How do you reduce harmonics? There are a number of methods to modify adverse system responses to harmonics: Add […]

What is Pascal law and its derivation? In the 1600’s, French scientist (Methematcian) Blaise Pascal (1623-1662) discovered one fact which is termed as Pascal’s Law. Pascal’s Law. According to Pascal’s Law, “Pressure or intensity of pressure at a point in a static. fluid will be equal in all directions”. What is Pascal’s law state its […]

How do you use a pulley to multiply forces? To lift something four times heavier, you can use exactly the same force but only if you pull the rope four times further. If you look at what’s happening on both sides of a pulley, and multiply the force by the distance moved, you’ll find it’s […]

Can you wire a 3 pin plug with 2 wires? No, it’ll be fine. You need an earth wire when you’ve got metal casings on appliances; the earth wire provides a preferred path to ground for a fault which results in the casing becoming live (ie, a preferred path to that path being ‘you’). Can […]

What is the main function of circulatory system? The circulatory system delivers oxygen and nutrients to cells and takes away wastes. The heart pumps oxygenated and deoxygenated blood on different sides. The types of blood vessels include arteries, capillaries and veins. What is an example of the circulatory system? The circulatory system is made up […]