some devices use electromagnetic waves to find the location and speed of an object. in these devices the waves are emitted and then reflected off of the object and returned back towards the device. By knowing the speed of the wave and the time it takes the wave to return to the device, the distance that the wave traveled can be calculated. which wave of wave would be the safest to use in this type of devices

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two

Ineed this now one scientist feels that the changes in global climatic patterns may be good for the health of the biosphere. another scientist feels that sharp changes in climatic patterns could result in the extinction of the biosphere. which of these is the most likely reason the two scientists gave conflicting opinions on the impact of changes in the global climatic pattern? they do not have enough knowledge on the topic. they did not discuss the issue among themselves. they believe conflicting opinion strengthens science. they study different areas of science and have different scientific focuses.

Which statements did both aristotle and ptolemy assume? check all that apply.