What does 4 × 10^-12 times 3 × 10^-8 divided by 2 × 10^24 equal?
6 × 10^–44
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A spherical object 25.0 cm in diameter having an emissivity of 0.800 is held at a temperature of 275°C by an internal heater. This object is embedded in a very large vat of water at 100.0°C and atmospheric pressure
At what maximum rate (in g/min) is the water evaporating in the vat due to the radiated heat it receives from the object? You can ignore any heat radiated by the water. The latent heat of fusion for water is 33,400 J/kg, its latent heat of vaporization is 2.26 × 106 J/kg, and the Stefan-Boltzmann constant is 5.670 × 10-8 W/m2 • K4.
A(n) ______ is a comparison of costs spent and income generated.
A. RWD B. SEO C. ROI D. CTA
A ball thrown upwards reaches a maximum height and then comes back down to the original level. As the ball is going upwards
a. the velocity and acceleration both point up. b. the velocity points up and the acceleration down. c. the velocity points down and the acceleration up. d. the velocity and acceleration both point down. e. the acceleration is zero.
You are asked to design a metal alloy for use in salt water. The most important design parameter is corrosion resistance followed by other mechanical properties such as yield strength. It is known that dissimilar metals in contact in salt water can result in corrosion of one of the materials. What type of metal alloy phase diagrams should you consider first for this application?
(a) Continuous solid solution (b) Eutectic (c) Compound formation (d) Peritectic