Melissa heated a few blue crystals in a test tube. after a few minutes, she observed that the crystals had turned white and a film of water had formed on the inside of the test tube.  before  melissa conducted this experiment, she most likely  developed a theory. developed a hypothesis. developed a bias. developed a scientific law.

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

Which statement is best supported by the information in the chart? wave y is moving the fastest. wave x is moving the fastest. all of the waves are moving at the same speed. all of the waves have the same value of wavelengths per second.

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system