7. A turtle swimming in a straight line toward shore has a speed of 0.5m/s. After 40s its
speed is 0.8m/s. What is the average acceleration? Show your working.
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Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Argon, neon, and xenon are examples of

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?