Why did NASA stop using space shuttles? In 2004, President Bush gave a speech that outlined the end of the shuttle era, without clearly identifying what would come next (or how much it would cost). This decision left NASA in limbo, as they were suddenly dependent on the Russians for access to space. Is the […]
Do turbo engines have more problems?
Do turbo engines have more problems? Turbo engines tend to have more problems in many cars, although there are turbocharged engines that are reliable. A turbocharged engine has more components than a naturally-aspirated (non-turbo) motor. A turbocharger itself is not uncommon to fail. The more parts, the more can go wrong. How long should you […]
What is the best type of energy storage?
What is the best type of energy storage? Lithium-ion batteries What are the main methods of energy storage? Energy can be stored in a variety of ways, including: Pumped hydroelectric. Electricity is used to pump water up to a reservoir. Compressed air. Electricity is used to compress air at up to 1,000 pounds per square […]
What is the main reason for acid mine drainage?
What is the main reason for acid mine drainage? Acid mine drainage (AMD) is the runoff produced when water comes in contact with exposed rocks containing sulfur-bearing minerals that react with water and air to form sulfuric acid and dissolved iron. This acidic run-off dissolves heavy metals including copper, lead, and mercury which pollute ground […]
What animals eat seagrasses?
What animals eat seagrasses? Expand/Collapse What animals eat seagrasses? Sea turtles, manatees, parrotfish, surgeonfish, sea urchins and pinfish feed on Florida seagrasses. Many other smaller animals feed on the epiphytes and invertebrates that live on and among seagrass blades. How do seagrasses get their energy? Seagrasses have roots, veins, and leaves. Seagrasses, like other plants, […]
What does a changing magnetic field causes?
What is voltage in a series circuit?
What is voltage in a series circuit? Voltage. In a series circuit, the voltage is the sum of the voltage drops of the individual components (resistance units). Is voltage the same in series capacitors? When capacitors are connected in series and a voltage is applied across this connection, the voltages across each capacitor are generally […]
What is effective overburden pressure?
What is effective overburden pressure? When the soil is subjected to some load, it transfers the load to water in the pores and soil grains. This is defined as effective overburden pressure and otherwise will be called as inter-granular stress or effective stress. It increases with increasing depth of soil. What is Geostatic pressure? 1. […]
What can be separated into several elements?
What can be separated into several elements? Compounds Can two elements form more than one compound? Law of multiple proportions, statement that when two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small […]
What do frogs do to protect themselves?
What do frogs do to protect themselves? The frog has enemies that will eat them. The skin will secret and cover the body with the poison and this will deter the enemy from eating them. Some use colors to protect themselves. Some will be very brightly colored body (especially red and yellow) to warn enemies […]