Category: Physics

How much time will it take to learn physics? The thing with high-school physics is that if you know high-school mathematics very well and have atleast average memory, it takes about half a year of about an hour or two daily to be able to ace SAT physics exam. If you struggle with mathematics, learn […]

Why would air pressure be greater at sea level than it would be on the top of a mountain? The lower the altitude, the greater the air pressure. At the top of a mountain the molecules are less dense and there is less air pressure. While at sea level the molecules are more dense and […]

What is the sequence of amino acids in a polypeptide? A series of amino acids joined by peptide bonds form a polypeptide chain, and each amino acid unit in a polypeptide is called a residue. What is a protein sequence database? The Protein database is a collection of sequences from several sources, including translations from […]

Which of these star clusters is oldest? A team of astronomers using the Gemini-South telescope has discovered one of the oldest stellar clusters in the Milky Way. The team’s results date the globular cluster, named HP 1, at about 12.8 billion years, making its stars among the oldest ever found in our Galaxy. Which group […]

Does gold have the same properties as silver? A review of the table shows that gold and silver are very similar to each other. Generally, compared to platinum and palladium, gold and silver have a lower melting and boiling point, are better conductors, softer, more reflective, and more abundant. Why do copper and silver have […]

Does body temp go up at night? It tends to go up and down a little during the day, and the same is true at night, although while you’re sleeping it can be 1 to 2 degrees lower than in the daytime. Body temperature starts to fall as bedtime approaches, paving the way for a […]

What are three things that affect longshore currents? When a wave breaks at a more acute (steep) angle on a beach, encounters a steeper beach slope, or is very high, longshore currents increase in velocity. Conversely, a wider breaking angle, gentler beach slope, and lower wave height slows a longshore current’s velocity. What causes long […]

What is the law of electric charges? Things that have the same charge push each other away (they repel each other). This is called the Law of Charges. Things that have more electrons than protons are negatively charged, while things with fewer electrons than protons are positively charged. Things with the same charge repel each […]

Do we need the sun to live? Do Humans Need Sunlight To Survive? The sun is the source of all heat and light energy on Earth. Humans get our energy from the food we eat, and all of that food is derived from the energy of the sun. So, we need the sun to survive. […]

What is Brownian motion explain with diagram? The zigzag movement of the small particles suspended in a liquid or gas is called brownian motion. The best evidence for the existence and movement of particles in liquid was given by ROBERT BROWN. On looking through the microscope, it was found that the pollen grains were moving […]