Which of these stars has the hottest core? (a) a white main-sequence star (b) an orange main-sequence star (c) a red main-sequence star

Above 70°C, what other compounds besides ammonia (NH3) have a lower solubility than that of potassium nitrate (KNO3) ?

Which Change will increase the yield of hydrazine? A reducing the amount of nitrogen gas B reducing the amount of hydrogen gas C increasing the amount of nitrogen gas D increasing the amount of hydrogen gas

What is Reverend Hail doing at the jail?

Which of the following describes pressure in a fluid

List both chemical equations for photosynthesis and cellular respiration. It is okay to use words for the equations, but you also need to write down the actual formula that includes the chemical compounds as found in the lessons.

The direction of the magnetic field is determined by which of the following? A. energy of the current B. magnetic domain C. magnetic force D. direction of the current

A ship is traveling at 154 m/s and accelerates at a rate of 1.80 m/s^2 for 1 minute. What will its speed be after that minute? Calculate the answer in both meters per second and kilometers per hour.

Gerry is looking at salt under a powerful microscope and notice a crystalline structure. what can be known about the salt sample that Gerry is looking at

The kinetic energy of a moving object is equal to the work required to bring it to its speed from rest, or the work the object can do while being brought to rest.

Imagine standing on a bathroom scale and reading your weight. now lift one foot and read your weight again. does the scale read more, less or the same weight when you are standing on one foot?