Will humans survive mass extinction?

Will humans survive mass extinction? We’re so uniquely adaptable, we might even survive a mass extinction event. Given a decade of warning before an asteroid strike, humans could probably stockpile enough food to survive years of cold and darkness, saving much or most of the population. How did animals survive mass extinction? “It was the […]

What is a unit of radiation?

What is a unit of radiation? The units of measurement for radioactivity are the becquerel (Bq, international unit) and the curie (Ci, U.S. unit). Exposure describes the amount of radiation traveling through the air. Many types of radiation monitors measure exposure. How do you convert rad to Gy? A rad (rd) is a deprecated non-SI […]

What is the best second hand BMW to buy?

What is the best second hand BMW to buy? BMW i3. The electric i3’s values are falling very slowly, meaning you shouldn’t lose too much in depreciation if you buy a used example that’s a few years old. BMW 5 Series (2010-2017) BMW X3 (2010-present) BMW Z4 (2009-present) BMW 1 Series (2011-present) BMW 3 Series […]

What happens when two galaxies approach each other?

What happens when two galaxies approach each other? When galaxies merge, the gasses interact with each other. As they begin to approach one another, the galaxies begin to stretch and deform, creating tails or arms. The combination of the two galaxies then forms what appears to be an elliptical galaxy as the arms begin to […]

Why do hurricanes never hit California?

Why do hurricanes never hit California? In short, wind direction and cold water are the main reasons we don’t see hurricanes in California. Tropical storms and tropical storms that become hurricanes need warm water to form. The area of 15 degrees north latitude is prime real estate for storms over open water. Is a hurricane […]

What is the wavelength of the first harmonic?

What is the wavelength of the first harmonic? For the first harmonic, the length of the string is equivalent to one-half of a wavelength. If the string is 1.2 meters long, then one-half of a wavelength is 1.2 meters long. The full wavelength is 2.4 meters long. What is a harmonic wave? A harmonic is […]

What are the disadvantages of LED bulbs?

What are the disadvantages of LED bulbs? What are the disadvantages of LEDs? High up-front costs. Transformer compatibility. Potential color shift over lamp life. Performance standardization has not yet been streamlined. Overheating can cause reduced lamp life. Why do my LED lights glow after being turned off? Why Do LED Bulbs Glow When Off? An […]

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