Express the following in scientific notation:

1. 6,000,000,000,000,000,000,000

2. 547,000

3. 3,507,000,000

4. 0.0004650

Amachine, modeled as a simple spring-mass system, oscillates in simple harmonic motion. its acceleration is measured to have an amplitude of 5,000 mm/s with a fre- quency of 10 hz. compute the maximum displacement the machine undergoes during this oscillation.

In a system, when potential energy decreases, then entropy also decreases. true false

Select all the correct answers. which three statements about electromagnetic radiation are true?