Category: Physics

Is the work when running the same as when you slowly walk up? whether you walk up or run up stairs the same work is done. Faster movement upwards must be an increase of acceleration and so an increase in force and that will give an increase of work. Is there work done if you […]

Do plants grow better with more CO2? So how does more carbon dioxide lead to more plant growth anyway? Higher concentrations of carbon dioxide make plants more productive because photosynthesis relies on using the sun’s energy to synthesise sugar out of carbon dioxide and water. Can plants grow in pure carbon dioxide? Plants cannot live […]

What is included in basal metabolism? Basal metabolic rate (BMR) is the total number of calories that your body needs to perform basic, life-sustaining functions. These basal functions include circulation, breathing, cell production, nutrient processing, protein synthesis, and ion transport. Is a high BMR good or bad? Taken as a whole, these observations suggest that […]

Is pH 12 acidic or basic? With a pH greater than 7, milk of magnesia is basic. (Milk of magnesia is largely Mg(OH) 2.) Pure water, with a pH of 7, is neutral. With a pH of less than 7, wine is acidic….Example 12. Substance pH seawater 8.5 milk of magnesia 10.5 ammonia solution 12.5 […]

Can the sun ever stop shining? Yes, but not for a very, very long time. In about 5 billion years, the hydrogen in the Sun’s core will run out and the sun will not have enough fuel for nuclear fusion. So, in about 5 billion years, the Sun will stop shining. What will happen if […]

How far away should your phone be when sleeping? 3 feet How far should I keep my cell phone from my baby? three feet Is WIFI harmful for baby? Children Face Higher Health Risk From Cell Phones. The potential harm from microwave radiation (MWR) given off by wireless devices, particularly for children and unborn babies, […]

How do machines make our lives easier? Simple machines make our lives easier by changing the amount of force or the direction of the force being applied (added). A lever moves around a point to increase or decrease the amount of force. A pair of scissors has two blades connected to a point which helps […]

What is second law of motion in simple words? Newton’s second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass […]

Why do sneezes feel good? According to Boyer, “the muscle tension that builds up in your chest causes pressure, and when you sneeze and the muscles relax, it releases pressure. Anytime you release pressure, it feels good.” What happens to your body when we sneeze? When you sneeze, the intrathoracic pressure in your body momentarily […]

What are the two main types of cells? There are two cell types: prokaryotes and eukaryotes. Prokaryotic cells are usually single-celled and smaller than eukaryotic cells. Eukaryotic cells are usually found in multicellular organisms, but there are some single-celled eukaryotes. What are the three parts of the cell? A cell consists of three parts: the […]