Examlex
A cube of aluminum has an edge length of 20 cm.Aluminum has a density 2.7 times that of water (1 g/cm3) and a specific heat 0.217 times that of water (1 cal/g°C ) .When the internal energy of the cube increases by 47000 cal its temperature increases by:
Educational System
The organized network of formal and informal structures that collectively provide education and learning environments and experiences to individuals in a society.
Computer Skills
The ability to operate, manage, and utilize computers and related technology efficiently for various tasks and applications.
Productivity Growth
Refers to the increase in the amount of goods and services produced per unit of input over a period of time.
Widespread Use
The extensive adoption or application of a product, technology, or practice among a large portion of the population.
Q1: The speed of sound in air is
Q3: The magnitude of the acceleration of a
Q9: The leaves of a positively charged electroscope
Q16: The density of water is 1.0 g/cm<sup>3</sup>.If
Q17: An object is raised from the surface
Q43: Which of the following assumptions is NOT
Q50: The diagram shows four pairs of large
Q64: When work W is done on an
Q76: A Kelvin thermometer and a Fahrenheit thermometer
Q96: The thermal energy of an object is