Asled is at rest at the top of a 2 m high slope. the sled has a mass of 45 kg. the sled's potential energy is j. (formula: pe = mgh)

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?