The color of a star depends on its, and - colored stars are the coolest.

How to find the charge of a proton in coulombs

A cylinder with a piston contains 0.300 mol of oxygen at 2.50*105 Pa and 360 K. The oxygen may be treated as an ideal gas. The gas first expands isobarically to twice its original volume.

Three capacitors having capacitances of 8.40, 8.40, and 4.20 μFμF, respectively, are connected in series across a 36.0-V potential difference. (a) What is the charge on the 4.20-μF4.

In what ways are electromagnetic force and gravitational force similar

A nail is hit with a hammer. Which type of contact force has been applied? A. spring force B. impact force C. friction force D. tension force

Why is carbon and nitrogen important?

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3. What is the kinetic energy of a 1300 kg car moving at 26.3 m/s?

Kendall has empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a balance and a marble. Which statement best describes what Kendall can do? A.

2. With regard to the pH scale, a solution with a pH A. higher than 7 is considered an acid. B. lower than 7 is considered basic. C. of 6 is considered neutral. D. close to 14 is considered a strong base.