Which three statements about electromagnetic radiation are true?

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Diamond will scratch quartz. true or false