If element X has 33 protons, how many electrons does it have?

An electron experiences a force of 100 N when it is moving through an electric field. Calculate the electric field strength.

Suppose that intelligent life in other parts of the universe were able to perceive parts of the electromagnetic spectrum which are invisible to us.

Given a force of 88 N and an acceleration of 4 m/s2, what is the mass?

Compare the advantages and disadvantages of buying compact fluorescent bulbs rather than filament bulbs (6 marks)

The table below shows two types of electromagnetic waves and three random applications of electromagnetic waves. Type of Wave Application of Waves Microwaves 1. Show the heat released by astronomical objects Infrared waves 2.

What is the expected wavelength (in cm) of 10.5 ghz microwaves in free space?

There are 5,280 feet in 1 mile and 12 inches in one foot. How many inches are in a mile?

An anion is an atom that has lost electrons. True or False?

Question: Jane, looking for Tarzan, is running at top speed (4.5 m/s) and grabs a vine hanging vertically from a tall tree in the jungle.

Kim holds a pinwheel in the air and says it can be used to model a source of energy. Identify the type of energy Kim's pinwheel models. Explain the type of energy source used.