Step Methods of data collection • Leamers should give a short explanation of the data collected in the past tense).
Primary data: first-hand information e. g. Observations
. Secondary Data: Extracte: Pictures, tables, graphs, reading and summary of text
citations from various sources such as internet and textbooks.
• Data should be systematically presented with a brief explanation of what each
represents. No duplication should be credited unless for comparison purpose
• Collect data using at least THREE methods for example:
maps
Literature research (newspapers, magazines, books etc.)
✓ Intsmet research​

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Search coils and credit cards. one practical way to measure magnetic field strength uses a small, closely wound coil called a search coil. the coil is initially held with its plane perpendicular to a magnetic field. the coil is then either quickly rotated a quarter-turn about a diameter or quickly pulled out of the field. (a) derive the equation relating the total charge q that flows through a search coil to the magnetic-field magnitude b. the search coil has n turns, each with area a, and the flux through the coil is decreased from its initial maximum value to zero in a time ∆t. the resistance of the coil is r, and the total charge is q = i∆t, where i is the average current induced by the change in flux. (b) in a credit card reader, the magnetic strip on the back of a credit card is rapidly “swiped” past a coil within the reader. explain, using the same ideas that underlie the operation of a search coil, how the reader can decode the information stored in the pattern of magnetization on the strip. (c) is it necessary that the credit card be “swiped” through the reader at exactly the right speed? why or why not?

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.