If 20.0 g of compound XY decomposes to form 12.0 g of element X and 8.00 g of element Y, ______________ g of element X will be formed by the decomposition of 40.0 g of compound XY
Fill in the blank(s) with correct word
24.0
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The solar cycle is a result of the
A. nuclear fusion at the core of the Sun. B. motion in the convection zone cycling material into the Sun's core. C. loss of energy in the Sun's magnetic field through flares, sunspots, and prominences. D. differential rotation of the Sun.
A huge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. The upper face carries +95.0 nC/m2 while the lower face carries -25.0 nC/ m2
What is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (?0 = 8.85 × 10-12 C2/N ? m2) A) 0.00 N/C B) 3.95 × 103 N/C C) 6.78 × 103 N/C D) 7.91 × 103 N/C E) 1.36 × 104 N/C
The flow of electrons in an electric circuit move by
A) bumping other electrons. B) colliding with molecules. C) interacting with an established electric field. D) none of the above
Three wires of the same diameter and length are made from three different metals: copper (? = 1.7 × 10^–8 ?·m), aluminum (? = 2.7 × 10^–8 ?·m), and silver (? = 1.6 × 10^–8 ?·m). Which wire has the least resistance?
a. the aluminum wire b. the silver wire c. the copper wire d. Since insufficient information is given to find the resistance of each wire, one cannot find the answer.