(Q018) The Earth is round because a. the gravitational tug of the Moon has worn down the jagged edges. b. the solar wind has shaped it. c. erosion over time has worn down the jagged edges of its planetesimals. d. its interior rock is warm enough to flow slowly in response to gravity.

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?