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We are able to define a mechanical equivalent for heat because
Primary Data
Data collected directly by the researcher through surveys, experiments, or observations for a specific research purpose.
Mail Surveys
A method of collecting data by sending questionnaires through postal mail to respondents, who are expected to complete and return them.
Telephone Interviews
An interview process conducted over the phone, often used in market research or job screening.
Marketing Research
The systematic gathering, recording, and analyzing of data about problems relating to the marketing of goods and services.
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