The product of one ______________ and one meter is one joule
Fill in the blank(s) with correct word
newton
You might also like to view...
assume that the surface of the storage vessel has an absorptance (equal to the emittance) of 0.1. Then determine the rate of evaporation of the liquid oxygen in kilograms per second and pounds per hour, assuming that convection can be neglected. The heat of vaporization of oxygen at –183°C is 213.3 kJ/kg.
GIVEN
• A spherical vessel of liquid oxygen in a large black room
• Emittance of vessel surface (?) = 0.1
• Liquid oxygen temperature (To) = –183°C = 90 K
• Sphere diameter (D) = 0.3 m
• Room wall temperature (Tw) = 27°C = 300 K
• Heat of vaporization of oxygen (hfg) = 213.3 kJ/kg
FIND
(a) The rate of radiative heat transfer (qr) to the liquid oxygen in W (b) The rate of evaporation of oxygen (mo) in kg/s
ASSUMPTIONS
• Steady state prevails
• The temperature of the vessel wall is equal to the temperature of the oxygen
• Convective heat transfer is negligible
SKETCH
PROPERTIES AND CONSTANTS
The Stefan-Boltzmann constant (?) = 5.67 ? 10–8 W/(m2 K4)
When is the angular momentum of a system constant?
A) Only when its total kinetic energy is constant. B) Only when the linear momentum and the energy are constant. C) Only when no net external torque is exerted on the system. D) Only when the moment of inertia is constant.
Short range interactions generally have carrier particles of greater mass than those for long range interactions
a. True b. False Indicate whether the statement is true or false
During a single period, the distance traveled by a wave is
A) one-half wavelength. B) one wavelength. C) two wavelengths. D) more information is needed