A circular steel wire 2.50 m long must stretch no more than 0.25 cm when a tensile force of 900 N is applied to each end of the wire. What minimum diameter is required for the wire? Express your answer to two significant figures and include the appropriate units.

i think the answer is a, hope this is right, that would be my best guess.

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.