New york is roughly 3000 miles from seattle. when it is 10: 00 a. m. in seattle, it is 1: 00 p. m. in new york. using this information, estimate (a) the rotational speed of the surface of earth, (b) the circumference of earth, and (c) the radius of earth.

The time difference between New York and Seattle is 3 hours. Since there is a 24 hour time difference in the globe, the equation is expressed (3/24) * circumference of Earth = distance. Distance is equal to 3000 miles hence the circumference is equal to 24,000 miles. The radius then is equal to 24,000/2 pi or 12,000/ pi. The rotational speed is 3000 miles/ 3 hours or 1000 miles/hr.

Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.