Can feelings for someone in your dreams be real cuz I had a dream with someone I know irk and I thought I didn't like him but IDK if the feelings are real

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

Compare and contrast refraction of light and sound will give brainliest

How does the motion of particles in a gas change as the gas cools