What type of reaction is 2Na+2H2O?2NaOH+H2+heat

The breaking car had 10,000 J of kinetic energy before breaking after breaking it had 2000 J of kinetic energy. How much thermal energy did the brakes gain?

What is the difference between resistance and resistivity

Identify two different ways you can make a yellow spotlight for a theater stage

Low energy waves have ... a. short wavelengths and low frequencies. b. long wavelengths and low frequencies. c. short wavelengths and high frequencies. d. long wavelengths and high frequencies.

Which of the following statements is not true about minorities in psychology today? A. Minorities make up half of the population earning degrees in psychology. B. Despite increases, minorities are still underrepresented in psychology. C.

A train moves at constant velocity of 50km/h. how far will it move in 0.5h?

Which process best describes part of a scientific investigation? O designing a solution O evaluating the conclusion O evaluating the solution O identifying the conclusion

How many neutrons are in Cesium-130

You are standing outside during the daytime. How can you see a blade of grass? A. Light is produced by your eyes and travels out to the grass. B. Light is produced by the grass and travels straight to your eyes. C.

Are cosmic rays and gamma rays invisible or do they have color?