Category: Physics

Do more bushels of potatoes grow when the soil is fertilized? An investigation found that more bushels of potatoes were produced when the soil was fertilized more. Students measured the temperature of the water at different depths in Lake Skywalker and found that the temperature varied. Does potatoes need to be fertilized? As you will […]

Who is the father of cosmology? ACHARYA KAPIL How do Cosmologists study the universe? There are two main ways in which cosmological observations support perturbed FLRW models. First, cosmologists use matter and radiation in the universe to probe the background spacetime geometry and its evolution. What is Africa cosmology? In the framework of African cosmology, […]

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 […]

What Cannot be burned by fire? Riddle: What can’t be burned in fire, nor drowned in water? Answer: Ice. What is a fire risk? A fire risk is the likelihood of a fire occurring and the consequences of that fire should one occur. 4. The legally defined Responsible Person under the Regulatory Reform (Fire Safety) […]

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 […]

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 […]

Does ozone kill bugs? This extra oxygen atom gives the molecule its ozone gas a very effective and powerful oxidizing power to kill insects, mold spores, mold growth, and odors such as pet odors and smoking odors. Bug-killing ozone gas returns to normal oxygen in about 30 to 45 minutes after turning off the ozone […]

What is the centripetal force that allows a car to turn? friction What is difference between centripetal force and centrifugal force? Centripetal force is defined as, “the force that is necessary to keep an object moving in a curved path and that is directed inward toward the center of rotation,” while centrifugal force is defined […]

Who pollutes the most in the world? China Is Lamb worse than beef for the environment? This blog post draws on data and research discussed in our entry on Environmental impacts of food production and CO2 and Greenhouse Gas Emissions. Beef and lamb, in particular, have much higher greenhouse gas emissions than chicken,pork, or plant-based […]

What is the best earthquake warning app? MyShake. The MyShake app was developed by the UC Berkeley Seismology Lab (California). In addition to providing alerts for earthquakes, safety tips, and maps, the app uses your phone to help detect earthquakes. Can iPhone detect earthquake? Your iPhone, iPad and most newer mobile phones can work as […]