Estimate the intensity of the radio wave
An AM radio station broadcasts with a power of 28.0kW at a frequency of 890kHz. Estimate the intensity of the radio wave at a point 13.0km from the broadcast antenna.
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what is the end value of n in a hydrogen atom transition, if the electron starts in n=2 and the atom absorbs a photon of light with a frequency of 4.57*10^14 Hz?
A load with impedence z=[25-j50]ohms is to be connected to a loseless transmission line with characteristic impedance Zo.with Zo chosen such that the wave ratio is the smallest possible.what should Zo be?
If the backpack begins to slide when the spring ( = 140 ) stretches by 2.50 , what is the coefficient of static friction between the backpack and the table?
Give the names and charges of the cation in each of the following compounds: CuS, Ag2SO4, Al(ClO3)3, Co(OH)2, PbCO3. Express your answers as ions separated by commas.
In response to the European Union's policy, an industry group was formed to generate industry-led solutions to the EU's concerns. This industry group is called?
A calorimeter contains 29.0 mL of water at 12.0, ^{circ}C. When 2.50 g of rm X (a substance with a molar mass of 50.0 g/mol) is added, it dissolves via the reaction
Some of the sulfur dioxide ends up as sulfuric acid ( H2SO4) in acid rain. What mass,in grams, of sulfur dioxide is needed to react with 37.50 moles of oxygen?
Assume that patient blood lead levels are 0.580 mg/L, that total blood volume is 5.1 L, and that 1 mol of succimer binds 1 mol of lead. What minimum mass of succimer in milligrams is needed to bind all of the lead in a patient's bloodstream?
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