What effect would stirring the mixture have on the rate of dissolving the solid in a liquid?
Stirring increases the rate of dissolving.
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Diffraction, optical quality, and atmospheric conditions all contribute to the limitations of what power of a telescope?
a. resolving power b. magnifying power c. diffraction power d. light gathering power e. focusing power
A 2.0-kg block situated on a frictionless incline is connected to a light spring (k = 100 N/m), as shown. The block is released from rest when the spring is unstretched. The pulley is frictionless and has negligible mass. What is the speed of the block when it has moved 0.20 m down the plane?
A. 76 cm/s B. 68 cm/s C. 60 cm/s D. 82 cm/s E. 57 cm/s
A charge of 8.0 pC is distributed uniformly on a spherical surface (radius = 2.0 cm), and a second charge of ?3.0 pC is distributed uniformly on a concentric spherical surface (radius = 4.0 cm). Determine the magnitude of the electric field 5.0 cm from the center of the two surfaces
a. 14 N/C b. 11 N/C c. 22 N/C d. 18 N/C e. 40 N/C
A temperature of 233 K equals which of the following?
a. 506°C c. –40°F b. 40°C d. 40°F