Why parallax method is limited? Parallax angles of less than 0.01 arcsec are very difficult to measure from Earth because of the effects of the Earth’s atmosphere. This limits Earth based telescopes to measuring the distances to stars about 1/0.01 or 100 parsecs away. When Parallax is 0.5 arcseconds What is the distance? The use […]
Why does water have high surface tension but low viscosity?
Why does water have high surface tension but low viscosity? Water’s high surface tension is due to the hydrogen bonding in water molecules. Water has very strong intermolecular forces, hence the low vapor pressure, but it’s even lower compared to larger molecules with low vapor pressures. Viscosity is the property of fluid having high resistance […]
Why is whale a mammal and not a fish?
Why is whale a mammal and not a fish? Whales are warm blooded, which means they keep a high body temperature that does not change in the cold water. Fish are cold-blooded, so their body temperature changes depending on the temperature of their environment. Fish lay eggs, which must still grow into a baby fish. […]
Do magnetic fields attract certain metals?
Do magnetic fields attract certain metals? Iron, cobalt and nickel, as well as alloys composed of these ferromagnetic metals, are strongly attracted to magnets. Other ferromagnetic metals include gadolinium, neodymium and samarium. Paramagnetic metals are weakly attracted to magnets, and include platinum, tungsten, aluminum and magnesium. What is the biggest magnet in the universe? Magnetars […]
Why is the D flashing on my Honda Odyssey?
Why is the D flashing on my Honda Odyssey? D light indicator blinks only way to clear is to turn off ignition and restart., transmission erattic when above condition exist. TCS light and CEL came on then transmission started slipping between 2nd and 3rd gears. Transmission judders between 25 to 40 miles per hour. Why […]
What is the best time to go fishing today?
What element is the most useful?
Do crabs eat sand fleas?
Do crabs eat sand fleas? Eating Sand Fleas May Not Be for Everyone Otherwise known as mole crabs and sand crabs, these sand fleas fit in nicely with some of the bizarre foods we’ve seen eaten by outdoorsmen and women over the years. What animals eat sand fleas? What Fish Eat Sand Fleas? Pompano. The […]
What kind of energy is used in microwaves?
What kind of energy is used in microwaves? Microwaves are a form of “electromagnetic” radiation; that is, they are waves of electrical and magnetic energy moving together through space. Electromagnetic radiation spans a broad spectrum from very long radio waves to very short gamma rays. Why would Microwave stop heating? If your microwave oven doesn’t […]
Does maple sap run at night?
Does maple sap run at night? Although sap generally flows during the day when temperatures are warm, it has been known to flow at night if temperatures remain above freezing. Well before colonists began sugar maple tree growing in this country, Native Americans tapped the trees for their sweet syrup and used the sugar made […]