Why are the two kinds of charge called positive and negative? Positively charged: electrons are removed making the object electron deficient. Negatively charged: electrons are added giving the object an excess of electrons. Who invented positive and negative charge? Benjamin Franklin How many types of charges are there? two Which element has a charge of? […]
What are the 4 functions of the atmosphere?
What are the 4 functions of the atmosphere? Atmosphere is essential for life on Earth as it supplies oxygen, water, CO2 and some nutrients (N) to living organisms, and protects living organisms from temperature extremes and excessive UV radiation. Up to about 80 km, the composition of atmosphere is highly uniform; therefore, the term homosphere […]
Does electricity need a complete circuit to flow?
Does electricity need a complete circuit to flow? The wires in a circuit carry the electric current to various parts of an electrical or electronic system. For electrons to do their job in producing light, there must be a complete circuit so they can flow through the light bulb and then back out. Can current […]
What city gets the least sunshine?
What city gets the least sunshine? Least Sunny Cities in the U.S. Rank City Annual % average possible sunshine 1 JUNEAU, AK 30% 2 MT. WASHINGTON, NH 33% 3 QUILLAYUTE, WA 33% 4 ELKINS, WV 40% What cities are the cloudiest? The gloomiest cities in the US Rank City Annual cloudy days 1 ANCHORAGE 239 […]
What is the advantage of Parfocal objective?
What is the advantage of Parfocal objective? A parfocal lens allows for more accurate focusing at the maximum focal length, and then quick zooming back to a shorter focal length. Parfocal lenses also ameliorate lens breathing, a common headache for photographers. What is the advantage of Parfocal objectives Group of answer choices? What is the […]
What is the formula for frequency and wavelength?
What is the formula for frequency and wavelength? Frequency (f) and wavelength (λ) are joined by the equation fλ = c, where c is the speed of light. As the speed of light is constant, if you increase the frequency, the wavelength must decrease to maintain this equation and vice versa. What is the purpose […]
How long do police have to investigate a crime?
How long do police have to investigate a crime? Effectively, this means the police must charge (or lay an information before a Magistrates’ Clerk) within six months of the date of the offence (section 127(1) Magistrates’ Courts Act 1980). For all other offences, there is no statutory time limit. How do police track down criminals? […]
How long does it take for a deep tissue injury to heal?
What causes a decrease in population?
What causes a decrease in population? Causes. A reduction over time in a region’s population can be caused by sudden adverse events such as outbursts of infectious disease, famine, and war or by long-term trends, for example sub-replacement fertility, persistently low birth rates, high mortality rates, and continued emigration. What is the most important factor […]
Is everything in the refrigerator the same temperature?
Is everything in the refrigerator the same temperature? The temperature does not depend on the type of material. But, how cold something at a low temperature feels if you touch it depends on more than temperature. The coldness sensation also depends on the heat conductivity and the specific heat capacity of the material.. Why does […]