Which of these is an example of a mechanical wave?

Ocean waves

Microwaves used to heat food

X-ray

Light from a flashlight

Which element combines chemically with sodium to from ordinary table salt

The time between a lightning flash and the following thunderclap may be used to estimate, in kilometers, how far away a storm is. How far away is a storm if 6 seconds elapse between the lightning and the thunderclap?

John pushes his brother Danny on a skateboard. John applies a force of 29 N and Danny's acceleration is 0.4 m/s

Which of the following is not a subatomic particle? Question 2 options: A. proton B. neutron C. electron D. nucleus

Because TVs require more voltage than is found in normal household current, what is built into them? A Induction batteries B step-up transformers C step-down transformers D secondary generators

Protons and neutrons strongly attract when they

How far is Jupiter from the sun?

Steam moves into a cylinder of a steam engine at a constant pressure and does 2.34 J of work on a piston. The diameter of the piston is 3.4 cm and the piston travels 4.6cm. What is the pressure of the steam?

Identify each type of simple machine.

A car's speedometer reads 20 m/s after accelerating, from a standing start, for 25s. What was the magnitude of its acceleration?