Category: Physics

Why do metals gain electrons? Metals: Metals like to lose valence electrons to form cations to have a fully stable octet. They absorb energy (endothermic) to lose electrons. The electron affinity of metals is lower than that of nonmetals. Nonmetals: Nonmetals like to gain electrons to form anions to have a fully stable octet. Are […]

What is the most common rock? Sedimentary rocks Is basalt rock hard? Basalt is a hard, black volcanic rock with less than about 52 weight percent silica (SiO2). Because of basalt’s low silica content, it has a low viscosity (resistance to flow). Therefore, basaltic lava can flow quickly and easily move >20 km from a […]

Can a peregrine falcon kill a human? A peregrine has between 4 to 8 times as much mass as a baseball, and can move at twice the speed of a fastball. That’s between 16 and 32 times the kinetic energy of a baseball. It is difficult to estimate the time of the collision accurately, but […]

What is the radius of a 12 foot circle? Diameter of a Circle Diameter ft in 12′0″ 37.70 452.4 12′1″ 37.96 455.5 12′2″ 38.22 458.7 12′3″ 38.48 461.8 What is the diameter of 12 feet? Question 328630: how to solve this? what is the length,in feet, of the circumference of a circle whose diameter is […]

What is transparent with examples? Materials like air, water, and clear glass are called transparent. When light encounters transparent materials, almost all of it passes directly through them. Glass, for example, is transparent to all visible light. Translucent objects allow some light to travel through them. What is example of opaque? An opaque object is […]

What are the symptoms of vasodilation? The widening of blood vessels during vasodilation promotes blood flow. This has the effect of reducing blood pressure within the walls of the blood vessels….In some cases, this may lead to symptoms including: nausea. blurred vision. lightheadedness or dizziness. confusion. weakness. fainting. What does vasoconstriction do to blood flow? […]

How do you tell if a VOR is high or low? As far as high/low VOR, one way to tell is to look at the High/Low enroute IFR charts. You can see two VOR stations on here labeled Minot Intl and Devils Lake Rgnl with a victor airway between them (V430). What is the difference […]

How is the movement of matter and energy different in an ecosystem? Nutrients can also cycle out of an ecosystem. Energy enters an ecosystem at any level and leaves at any level, while the flow of matter does not. The flow of matter cycles freely between trophic levels and between the ecosystem and the physical […]

What would happen if a bowling ball collided with a standing pin? When the bowling ball collides with the pins, the momentum the ball loses is equal to the momentum the pins gain. An object’s inertia resists changes its motion. The momentum and force of a rolling ball is greater than that of the pins. […]

What is the most important intermolecular force in nf3? This makes the structure of nitrogen trifluoride asymmetrical. Thus, it is a polar molecule. For polar molecules, the type of intermolecular force of attraction that dominates is dipole-dipole force. What is the strongest intermolecular attractive force in SiH4? The intermolecular forces exists among SiH4 molecules is […]