Category: Physics

Could a bird fly on the moon? Without air, a bird cannot fly. On moon, there is no air. Though there is a very-very thin layer of gases on the surface of the moon, it is extremely negligible. There are only about 100 molecules per cubic centimetre in the so-called atmosphere on the surface of […]

What are some examples of logical thinking? Types of Logic With Examples Premises: Nikki saw a black cat on her way to work. At work, Nikki got fired. Conclusion: Black cats are bad luck. Premises: There is no evidence that penicillin is bad for you. I use penicillin without any problems. Premises: My mom is […]

What are the 10 main biomes What are their characteristics? Terrestrial biomes include tropical rainforests, temperate forests, grasslands, deserts, tundra, taiga, savanna and chaparral. Chaparral Biome. Scrubland and few trees characterize chaparral. Desert Biome. Tundra Biome. Taiga Biome. Grassland Biome. Rainforest Biome. Temperate Deciduous Forest Biome. Alpine Biome. What are the unique characteristics of each […]

What is the difference between primary and secondary coil? Consider a transformer have a primary coil and secondary coil, number turns in primary coil is less when compared to number of turns in secondary coil. Input voltage carried through primary coil and output voltage carried through secondary coil. The primary coil has 2 turns and […]

What are the 4 types of circulation? The heart, the lungs, and the blood vessels work together to form the circle part of the circulatory system. 3 Kinds of Circulation: Systemic circulation. Systemic Circulation. Coronary Circulation. Pulmonary Circulation. Plasma. Which animal shown has the simplest circulatory system? Fish What do we call the largest artery […]

How dangerous is space radiation? Beyond Low Earth Orbit, space radiation may place astronauts at significant risk for radiation sickness, and increased lifetime risk for cancer, central nervous system effects, and degenerative diseases. 1 mSv of ionizing radiation is equivalent to about three chest x-rays. What part of a banana is radioactive? Potassium (K) is […]

What happens when you add 2 sine waves? First, let’s take a look at what happens when we add two sinusoids of the same frequency. Adding a sine and cosine of the same frequency gives a phase-shifted sine of the same frequency: In fact, the amplitude of the sum, C, is given by: Notice that […]

What is the period of 50 Hz? 0.02 s What is the period of a 50 Hz sine wave? The period of a 50 kHz sine wave is 2 x 10-5 second. What is the period of a 60 hertz sine wave? The time between two identical points on a sine wave is called the […]

What are the needs of sustainable development? Seventeen goals were set: to end poverty; zero hunger; quality education; gender equality; clean water and sanitation; affordable and clean energy; decent work and economic growth; industry innovation and infrastructure; reduced inequalities; sustainable cities and communities; responsible consumption and production; … What are the challenges of sustainable development? […]

Are studs every 12 inches? If you don’t have a stud finder, there are several methods that can be effective in finding studs. When a home is framed, the wall studs are usually spaced 16 or 24 inches apart. If you start in a corner and measure out 16 inches and you don’t find a […]