What is our best hypothesis for why all the planets in our solar system orbit in the same direction as the Sun rotates?
A) The planets and Sun formed from the same, single, rotating gas cloud.
B) It's a complete coincidence.
C) The planets were pulled out of the Sun by a major interaction with another star.
D) Almost everything in our Galaxy rotates in the same direction.
E) The Sun did not initially rotate, but the planets gravity caused it to start rotating in the direction in which the planets orbit.
A) The planets and Sun formed from the same, single, rotating gas cloud.
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The magnetic field of a bar magnet is similar to that produced by ________
a. a current carrying wire shaped like a coil b. a horseshoe magnet c. a straight current carrying wire
At a distance of 2.00 m from a point source of sound, the intensity level is 80.0 dB. What will be the intensity level at a distance of 4.00 m from this source? The lowest detectable intensity is 1.0 × 10-12 W/m2
A) 77.0 dB B) 74.0 dB C) 60.0 dB D) 40.0 dB E) 20.0 dB
Banked Curves: Two cars go around a banked curve at the proper speed for the banking angle. One car has tires with excellent traction, while the other car has bald slippery tires. Which of these cars is more likely to slide on the pavement as it goes around the curve?
A. the car with the new tires B. the car with the bald tires C. Neither car will slide. D. It depends on if the pavement is wet or dry.
The symbol for the element whose atoms contain 28 protons is ______________
Fill in the blank(s) with correct word