Does water exist in space? Enormous amounts of water, in gaseous form, exist in the vast stellar nurseries of our galaxy. The Hubble Space Telescope peered into the Helix Nebula and found water molecules. Hydrogen and oxygen, formed by different processes, combine to make water molecules in the ejected atmosphere of this dying star. Who […]
What is the charging time of capacitor?
What is the charging time of capacitor? The time required for the capacitor to be fully charge is equivalent to about 5 time constants or 5T. Thus, the transient response or a series RC circuit is equivalent to 5 time constants. How do you know how long a capacitor is charged? To calculate the time […]
What is a soft shadow?
What is a soft shadow? Figure 3.20 Hard-edged shadows indicate light from a small point source. In many cases, using soft shadows (which are less distinct and fade off toward the edges, as in Figure 3.21) for some of your lights tends to look more realistic than using only hard shadows. How do shadows change […]
Is gold a main group element?
Is gold a main group element? Examples of main group elements include helium, lithium, boron, carbon, nitrogen, oxygen, fluorine, and neon. Elements that are not main group elements are the transition metals (such as titanium, copper, and gold), the lanthanides (such as lanthanum and erbium), and the actinides (such as actinium and plutonium). What are […]
What are the two types of satellite images?
What are the two types of satellite images? TYPES OF SATELLITE IMAGERY VISIBLE IMAGERY: Visible satellite pictures can only be viewed during the day, since clouds reflect the light from the sun. INFRARED IMAGERY: Infrared satellite pictures show clouds in both day and night. What are the two types of weather satellites? There are two […]
Why is C 14 not used to date dinosaur bones?
Why is C 14 not used to date dinosaur bones? But carbon-14 dating won’t work on dinosaur bones. The half-life of carbon-14 is only 5,730 years, so carbon-14 dating is only effective on samples that are less than 50,000 years old. To determine the ages of these specimens, scientists need an isotope with a very […]
How do you increase density of oil?
What does the name halogen mean?
What does the name halogen mean? Group 7A (or VIIA) of the periodic table are the halogens: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The name “halogen” means “salt former”, derived from the Greek words halo- (“salt”) and -gen (“formation”). Who are the members of halogen family? Halogen, any of the […]
How much cooler should AC be than outside temp?
How much cooler should AC be than outside temp? How much can an air conditioner drop the temperature in your home? Air conditioners are designed to lower the temperature of your home’s air by about 20 degrees. So if the air in your home is 85 degrees, for example, your air conditioner can lower your […]
Does TBI shorten your life?
Does TBI shorten your life? These changes may affect a person’s ability to function in their everyday life. Despite initial hospitalization and inpatient rehabilitation services, about 50% of people with TBI will experience further decline in their daily lives or die within 5 years of their injury. Do TBI patients sleep a lot? Conclusions: Sleepiness […]