Category: Physics

How does the eye respond to bright light? In bright light, it contracts. Light detected by the retina of your eye is converted to nerve impulses that travel down the optic nerve. Some of these nerve impulses go from the optic nerve to the muscles that control the size of the pupil. More light creates […]

Which letter has the most water? C. What is the most used 4 letter word? Can you name the 25 most common 4-letter English words? rank 4-letter word % Correct 24 have 47.9% 41 your 46.5% 61 them 43.1% 56 will 38.1% What is the most common three letter word? ENGLISH Order Of Frequency Of […]

Can you hear a plane at 20 000 feet? Yes, depending on the type of plane, which would determine how loud it is and what the frequency of its sound output was, in normal cruising flight. How far can you hear a jet? Aircraft noise is also affected by humidity, air density and cloud cover. […]

What are 3 negative factors that affect mental wellness? Unemployment, redundancy, loss of a business, large investment losses or other financial loss can have a negative impact on your mental health. How does social factors affect mental health? Summary. Most aspects of mental illness and psychological well‐being are influenced by social factors (such as gender, […]

How deep can you dig into the earth? 40,230ft What happens if you dig too deep in the earth? To make things more difficult, as they drill deeper into the Earth, they’ll encounter extreme temperatures, possibly in excess of 1,000 degrees Fahrenheit (538 degrees Celsius), and fantastic amounts of pressure — as much as 4 […]

Which object experiences the greatest acceleration? Car A Which vehicle experiences the greater change in acceleration? (c) Mass and acceleration are inversely proportional to each other. Therefore, car experiences greater acceleration due to its smaller mass. (d) Due to its smaller mass or opposition to the force exerted on it, the car is likely to […]

What is better active or passive noise cancellation? While both passive noise isolation and active noise cancellation allow you to listen to music at lower volumes than earphones without ANC, passive noise isolation is better for your hearing overall. This is because active noise cancellation neutralizes outside noise by creating an equal and opposite noise. […]

What is the Centre of pressure on an aerofoil? Center of Pressure The center of pressure is the point where the total sum of a pressure field acts on a body. In aerospace, this is the point on the airfoil (or wing) where the resultant vector (of lift and drag) acts. What happens to the […]

What is the characteristics of other planets in the solar system? The solar system is host to two broad categories of planets. The four closest to the sun — Mercury, Venus, Earth and Mars — are the terrestrial planets. They have rocky surfaces enclosed by relatively shallow atmospheres. The gas and ice giants — Jupiter, […]

What is lithium-7 used for? Li-7 is used to control the pH level of the coolant in the primary water circuit of pressurized water reactors. Li-7 is also used for the production of the medical research radioisotope Be-7. Li-6 is used in thermonuclear weapons and the export and use of Li-6 is therefore strictly controlled. […]