Describe the types of tasks in which Perl is frequently used.
What will be an ideal response?
You can use Perl to manipulate text, display output, handle mathematical processes, and work with files. An important reason for learning Perl is that it is a popular scripting tool used for generating reports and for Web programming.
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A refrigerator is to cool 2 kg of water (at atmospheric pressure) from 40°C to 5°C. The coefficient of performance of the refrigerator is 3.10. Determine the work needed to operate the refrigerator during this cooling process.
Given: Water; m = 2 kg; T1 = 40°C; T2 = 5°C; B= 3.10 Assume: The water behaves as an incompressible substance with constant specific heats: c = 4.18 kJ/kg-K. For the water as a system, W = ?KE = ?PE = 0
____________________ are the data collected for animals across several herds that include such information as birth date and weaning weight.
Fill in the blank(s) with the appropriate word(s).
____________________ contain iron and will attract a magnet.
Fill in the blank(s) with the appropriate word(s).
Pinch-off voltage refers to
A) value of drain-source voltage at which drain current is maximum B) value of drain-source voltage at which drain current remains constant C) value of drain-source voltage at which drain current is minimum D) none of the above