What are the 3 things that an internal combustion engine needs to run? Beyond the combustion stroke, which pushes the piston down from the top of the cylinder, there are three other strokes: intake, compression, and exhaust. Engines need air (namely oxygen) to burn fuel. How do you adjust a carburetor? Carb Quick Guide Verify […]
How is energy transferred in a bicycle?
How is energy transferred in a bicycle? Mechanical energy usually means the sum of the kinetic energy and potential energy. So when you ride your bike you hope that the muscular (chemical) energy is converted mainly into mechanical energy. Unfortunately friction will produce heat and sound and will reduce the amount of mechanical energy that […]
Why do electrons lose or gain electrons?
Why do electrons lose or gain electrons? Explanation: Atoms and chemical species lose or gain electrons when they react in order to gain stability. Thus, typically, metals (with nearly empty outer shells) lose electrons to non-metals, thereby forming positive ions. The number of electrons depends on their position on the Periodic table (in simple terms). […]
Is a magnitude 10 earthquake possible?
Is a magnitude 10 earthquake possible? No, earthquakes of magnitude 10 or larger cannot happen. The magnitude of an earthquake is related to the length of the fault on which it occurs. The largest earthquake ever recorded was a magnitude 9.5 on May 22, 1960 in Chile on a fault that is almost 1,000 miles […]
What is approximate temperature and pressure?
What is approximate temperature and pressure? NTP – Normal Temperature and Pressure – is defined as air at 20oC (293.15 K, 68oF) and 1 atm (101.325 kN/m2, 101.325 kPa, 14.7 psia, 0 psig, 29.92 in Hg, 407 in H2O, 760 torr). Density 1 What is the approximate vapor pressure when the gas condenses at 80 […]
What are the process of scientific investigation?
What are the process of scientific investigation? Steps of a Scientific Investigation Identify a research question or problem. Form a hypothesis. Gather evidence, or data, to test the hypothesis. Analyze the evidence. Decide whether the evidence supports the hypothesis. Draw conclusions. Communicate the results. How do you start an investigation? Learn how to investigate a […]
Is the voltage the same for capacitors in series?
Is the voltage the same for capacitors in series? When capacitors are connected in series and a voltage is applied across this connection, the voltages across each capacitor are generally not equal, but depend on the capacitance values. Why a capacitor should be connected in parallel not series? Capacitors are devices used to store electrical […]
What frequency is 75 meters?
What frequency is 75 meters? All Frequencies in MHz 160 Meters: 1.885, 1.900, 1.945, 1.985 75 Meters: 3.825, 3.870 (West Coast), 3.880, 3.885 40 Meters: 7.290, 7.295 20 Meters: 14.286 Is 80 meters upper or lower sideband? Lower sideband (LSB)–The common single-sideband operating mode on the 40, 80 and 160-meter amateur bands. Upper sideband (USB)–The […]
Who owns water in the USA?
Who owns water in the USA? Water corporations have identified United States public systems as potentially profitable. These are United Water, a subsidiary of the French company Suez Environment, American Water, and Siemens from Germany which acquired US Filter Corps from French Veolia Environment and runs it under the Siemens name. Who owns water in […]
How do you calculate percent Half Life?
How do you calculate percent Half Life? As you can see from this table, the amount of reactant left after n half-lives of a first-order reaction is (1/2)n times the initial concentration….Half-Lives and Radioactive Decay Kinetics. Number of Half-Lives Percentage of Reactant Remaining 1 100%2=50% 12(100%)=50% 2 50%2=25% 12(12)(100%)=25% 3 25%2=12.5% 12(12)(12)(100%)=12.5% n 100%2n (12)n(100%)=(12)n% […]