What type of radiation is emitted from mobile phones? non-ionizing radiation Do cell phones use AM or FM? Cellular (cell) phones operate with radio frequencies, a form of electromagnetic energy located on the electromagnetic spectrum between FM radio waves and the waves used in microwave ovens, radar, and satellite stations. Cell phones do not emit […]
What are examples of economic development?
What are examples of economic development? During the development, there is a population shift from agriculture to industry, and then to services. A longer average life expectancy, for example, is one of the results of economic development. Improved productivity, higher literacy rates, and better public education, are also consequences. What are the main indicators of […]
Does removing an electron use or release energy?
Does removing an electron use or release energy? When electrons are removed from an atom, that process requires energy to pull the electron away from the nucleus. Addition of an electron releases energy from the process. The energy change that occurs when a neutral atom gains an electron is called its electron affinity . Do […]
Can soil be too rich for plants?
Can soil be too rich for plants? No. Soils that are too rich for one plant may be perfect for another plant. If you believe you’ve added too much compost, adjust your landscape or garden to compensate, and after a year or two, you should have a happy, healthy foundation to work with. What happens […]
What happens if I use 0w30 instead of 0w20?
What happens if I use 0w30 instead of 0w20? Using a 40 grade instead of 20 can cause engine damage during startup and cause metal to metal contact during high RPM which can be catastrophic for your engine. Always use manufacturer recommended engine oil grade. Is 0w20 thicker than 5w30? 5W-30 is a thicker oil […]
How do you turn off the back wiper on a Ford?
What does Obama do as president?
What does Obama do as president? Obama’s first-term actions addressed the global financial crisis and included a major stimulus package, a partial extension of the Bush tax cuts, legislation to reform health care, a major financial regulation reform bill, and the end of a major US military presence in Iraq. What does Michelle Obama do […]
What is moving source and observer?
What is moving source and observer? If the observer moves toward the source at a speed vo, more waves are intercepted per second and the frequency received by the observer goes up. Effectively, the observer’s motion shifts the speed at which the waves are received; it’s basically a relative velocity problem. What are the four […]
Is the crate accelerating?
Is the crate accelerating? The crate has a horizontal acceleration equal to the tension T divided by m, the mass of the crate. What about the forces in the vertical direction? The upward normal force exerted by the floor on the crate, in this situation, is equal to the weight, the downward force of gravity. […]
How do you know if an equation has more than one solution?
How do you know if an equation has more than one solution? The equation simplifies to the point that it no longer contains a variable, but expresses a true equation, e.g. 0=0 . For example: 2x+2=2(x+1) simplifies in this way. The equation has an identifiable solution and is periodic in nature. For example: tan2x+tanx−5=0 has […]