In the process of vulcanization the LCMs in latex are bonded together with ______________atoms to produce rubber.
Fill in the blank(s) with the appropriate word(s).
sulfur
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Two solenoids are each made of 2 000 turns of copper wire per meter. Solenoid I is 2 m long, while solenoid II is 1 m long. When equal currents are present in the two solenoids, the ratio of the magnetic field BI along the axis of solenoid I to the magnetic field BII along the axis of solenoid II, BI/BII, is
a. 1/4. b. 1/2. c. 1. d. 2 e. 4.
A uniformly charged rod (length = 2.0 m, charge per unit length = 3.0 nC/m) is bent to form a semicircle. What is the magnitude of the electric field at the center of the circle?
a. 64 N/C b. 133 N/C c. 48 N/C d. 85 N/C e. 34 N/C
Radioactive Decay: Given that the half-life for radium-226 is 1600 y, how long is the "quarter-life" (that is, the time for the radiation to decay to one-fourth of its initial level)?
Fill in the blank(s) with the appropriate word(s).
Using the standard steam tables, calculate the coefficient of thermal expansion, ?, from its definition for steam at 450°C and pressures of 10 kPa and 1 MPa. Then compare your results with the value obtained by assuming that steam is a perfect gas and explain the difference.
GIVEN
• Steam
• Temperature = 450°C = 723 K
FIND
The coefficient of thermal expansion at 10 kPa and 10 MPa from
(a) Standard Steam tables
(b) Perfect Gas Law
PROPERTIES AND CONSTANTS
From steam tables
