Physics
Calculate the resistance of 80 metres of copper wire, with a c.s.a. of 0.5mm2, given its resistivity of 1.72 x 10^-6 ohms per metre, Note, the area of the wire must be expressed as a portion of its base unit of measurement, which is the square metre.
Physics
Suppose that you are using a multimeter on the OHMS scale to test a capacitor and the meter reads zero. What condition of the capacitor does this indicate?
fire science
A compartment measures 14 feet wide, 12 feet long and 8 feet high, lined with ½ inch sheetrock and has a standard 36 inch by 80 inch door. What HRR is required for flashover?
Physics
A fuel has heat of combustion equal to 30 kJ / g. How much energy is released when 5 kilograms are oxidized?
Physics
A compartment measures 3.5 meters by 5.5 meters and is 3 meters high. A fire raises the temperature from 68of to 1500 of. If the starting pressure was 1 atmosphere, what volume is present at the elevated temperature assuming the compartment has openings to reduce pressure?
Physics
A compartment measures 3 meters by 5 meters and is 2.8 meters high. A fire raises the temperature from 20oC to 1000 oC. If the starting pressure was 1 atmosphere, what pressure is present at the elevated temperature assuming the compartment remains closed?
Math
Sales tax an item that cost $3.00 + tax rate is 6%
Math
Find the sum of all integers c, such that for some integers a and b satisfying a<b<c, a(b−c)^4+b(c−a)^4+c(a−b)^4=836
physics
On Mars, the acceleration due to gravity is 3.71 m/s2. How far would a rock fall in 3 s if you dropped it on Mars?
Algrbra
A certain paperback sells for $12. The author is paid royalties of 11% on the first 10,000 copies sold, 12.5% on the next 5000 copies, and 18% on any additional copies. Find a piecewise-defined function R that specifies the total royalties if x copies are sold. Please help me ...
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