Physics in motion unit 6a the nature of waves

A florescent light tube usually contains what? A a vacuum B oxygen C. Mercury vapor D. Light emitting diodes

How can energy change during a chemical reaction? a. transfer of heat and/or work b. increase in heat and/or destruction of matter c. change in the mass of the reactants or thermal energy d. increase or decrease in total energy of a system?

A block is given a short push and then slides with constant friction across a horizontal floor. Which statement best explains the direction of the force that friction applies on the moving block? a.

A car is traveling at 12 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 24 m/s?

Which si prefix means one one-hundredth (1/100) ?

If the approximate energy of a photon present in an X-ray is 8.0 * 10-15 joules, what's the frequency of the X-ray? Given: Planck's constant is 6.63 * 10-34 joule·seconds. (A) 1.2 * 1014 hertz (B) 1.2 * 1019 hertz (C) 8.2 * 1018 hertz (D) 8.

Why is messi the best soccer player in the world

A data chrt shows the height of a person on his birthday each year for 10 years what is the dependent variable

A baking tray is made of metal because its

A scientist mixes an unknown powder into a beaker of water. He then uses an indicator and finds that the pH of the resulting solution is 8.5. What can he infer from this observation? The unknown powder was acidic.