The graph shows a car's velocity over time. Velocity versus Time
60
50
40
Velocity, in mph forward
30
20
10
1 2 3 4 5 6
Time, in seconds (s)
During which time period does the car have the greatest acceleration?
A. Between 1 and 2 seconds
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B. Between 0 and 1 seconds
C. Between 2 and 4 seconds
D. Between 1 and 6 seconds

Avalue that describes how heavy an object is and is related to the force of gravity is

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?

The material that keeps its new shape after it is stretched is called?