Category: Physics

What are the two major types of health insurance? The two main types of health insurance are private and public. Public health insurance, like Medicare, is provided through the government, while private health insurance include plans you get through an employer or the marketplace. You can further categorize health insurance by the plan type, like […]

Do human eyes have more rods or cones? Despite the fact that perception in typical daytime light levels is dominated by cone-mediated vision, the total number of rods in the human retina (91 million) far exceeds the number of cones (roughly 4.5 million). As a result, the density of rods is much greater than cones […]

How much pressure is on a pool wall? The water pressure stays exactly the same…it’s dependent on the depth, but not on the width of the container. So the water pressure at 3.5′ depth will be 1.52 psi whether it’s in a 55 gallon drum, a 2″ vertical pipe or against a swimming pool wall. […]

What is the format to write an activity? Some write-ups (especially when published in certain journals or newsletters or books) include an introductory narrative about the activity, often citing relevant literature related to what it tries to accomplish or giving more details about the goals of the activity. How do you prepare an activity? Activity/Lesson […]

What is a three dimensional vector? A 3D vector is a line segment in three-dimensional space running from point A (tail) to point B (head). Each vector has a magnitude (or length) and direction. What is the z component of a vector? The components of the vector specify the displacement from the tail to the […]

What year did 22 Jump Street come out? June 13, 2014 (USA) What kind of a name is Jeff? Jeff is a masculine name, often a short form (hypocorism) of the English given name Jefferson or Jeffrey, which comes from a medieval variant of Geoffrey. Jeff is especially used in the US and Canada. Who […]

Is gas going up to 5 dollars? LOS ANGELES – Once again prices at the pump in Southern California continue to rise. After a pandemic pause in 2020, gas prices are now hitting their highest levels since November of 2019. Who controls the price of gas? The price of gasoline is made up of four […]

What happens to current in reverse bias? Reverse bias usually refers to how a diode is used in a circuit. If a diode is reverse biased, the voltage at the cathode is higher than that at the anode. Therefore, no current will flow until the electric field is so high that the diode breaks down. […]

Why does zinc have a +2 charge? Zinc has an electron configuration of [Ar] 3d10 4s2. This small amount of electrons means it is more likely to lose the 2 electrons rather than taking on any in a reaction. Losing all the electrons on the fourth shell would mean Zn lost two negative charges, making […]

What do infrared colors mean? In any thermogram, the brighter colors (red, orange, and yellow) indicate warmer temperatures (more heat and infrared radiation emitted) while the purples and dark blue/black indicate cooler temperatures (less heat and infrared radiation emitted). In this image, the bright yellow area indicates the electrical fault. What color is infrared 23? […]