Is there no noise in space? Unlike light, sound requires a medium to travel through. This simply means that in order to hear sound there has to be something for sound to travel through. In the vacuum of space, there are no (or very, very few) particles to vibrate, so sound cannot travel through this […]
What is the formula for potassium iodide?
What is the formula for potassium iodide? KI What is the physical state of potassium iodide? Potassium Iodide Properties (Theoretical) Compound Formula IK Appearance White crystalline solid Melting Point 681 °C Boiling Point 1,330 °C Density 3.123 g/cm3 What is the charge for potassium iodide? +1 What is a substitute for potassium iodide? As an […]
What unit is coefficient of friction?
What unit is coefficient of friction? newtons What does a wheel and axle do? Wheel and axle, basic machine component for amplifying force. In its earliest form it was probably used for raising weights or water buckets from wells. Its principle of operation is demonstrated by the large and small gears attached to the same […]
What triggers drought?
What triggers drought? When rainfall is less than normal for a period of weeks to years, streamflows decline, water levels in lakes and reservoirs fall, and the depth to water in wells increases. If dry weather persists and water-supply problems develop, the dry period can become a drought. How long did the dirty thirties last? […]
How do you magnetize metal permanently?
How do you magnetize metal permanently? Take two magnets put one North pole and one South pole on the middle of the iron. Draw them towards its ends, repeating the process several times. Take a steel bar, hold it vertically, and strike the end several times with a hammer, and it will become a permanent […]
What is chain reaction with example?
What is chain reaction with example? In chain reaction. Nuclear chain reactions are series of nuclear fissions (splitting of atomic nuclei), each initiated by a neutron produced in a preceding fission. For example, 21/2 neutrons on the average are released by the fission of each uranium-235 nucleus that absorbs a low-energy neutron. What is another […]
Where should you connect a voltmeter?
Where should you connect a voltmeter? A voltmeter is placed in parallel with the voltage source to receive full voltage and must have a large resistance to limit its effect on the circuit. An ammeter is placed in series to get the full current flowing through a branch and must have a small resistance to […]
What are the phases of meiosis II?
What are the phases of meiosis II? In meiosis II, the phases are, again, analogous to mitosis: prophase II, metaphase II, anaphase II, and telophase II (see figure below). As shown in the figure below, meiosis II begins with two haploid (n = 2) cells and ends with four haploid (n = 2) cells. Are […]
Where is the magnetic field strongest?
Where is the magnetic field strongest? center Why does electricity produce magnetic fields? Inside a magnet, the atoms at one end contain electrons that all spin in one direction – meanwhile the atoms at the other end contain electrons that all spin in the opposite direction. Rather than spinning in a balanced way, the electrons […]
What should manifold vacuum be at idle?
What should manifold vacuum be at idle? Manifold vacuum is used to show engine compression and is created between the throttle plate and the intake valves. Normal manifold vacuum on an engine running at idle speed is around 18 to 20 inches. How much vacuum should a 350 have at idle? Idle vacuum for most […]