electrostatics
Electric Potential and Current
Magnetism and Electromagnetism
Waves and sound
Light and Optics
100

Is force and charge directly proportional or inversely proportional?

They are directly proportional

100

What is used to prevent circuit overload in homes?

GFCI


100

What does a motor do?

changes electrical energy into mechanical energy

100

why does a siren change pitch as it passes you?

Because the frequency is wider therefore lower the farther away it is from you.

100

which electromagnetic wave has the highest frequency?

Radio waves has the highest frequency

200

When two charges are the same what will they do when they are neat each other? 

(positive and positive),(negative and negative)

They will repel

200
Rate at which electrical energy is used

power

200

How do you make a magnetic field stronger?

By adding more loops of a coil of wire in a solenoid

200

What is the Doppler effect?

A change in frequency or wavelength of a source due to the relative motion between the source and observer.

200

What is Diffraction?

A method in which waves can go through an opening, around a corner, or around an obstacle.

300

What are the charged parts of an atom?

Protons and Electrons

300

what does an insulator do?

block the flow of electricity

300

If an iron piece behaves like a magnet when near a magnet what is it called?

A temporary magnet.

300

What does frequency have to do with pitch?

Its directly proportional meaning frequency can determine pitch of sound.

300

Convex lenses focus light by...

Refraction

400

if a glass rod is rubbed with a silk cloth, will the rod gain or lose electrons?

It will loses electrons.

400

What does a parallel circuit do?

a circuit with multiple paths
400

Electromagnet and paper clips beside a magnet, are both examples of...

A temporary magnet

400

What waves require a medium in order to travel?

Mechanical waves

400

What type of light is useful in killing bacteria but can be harmful to skin?

Ultraviolet light

500

What's the equation for Coulombs law and Newton's law of universal gravitation?


500

What is the current through a 75-ohms resistor if the potential difference across it is 12 volts?

using formula: v=ir. The answer is 0.16 A.

500

A magnetic probe is sixty millimeters south of a current-carrying wire. The induced field at that location is 1.20 G in the eastern direction (horizontal). The Earth's magnetic field at the location is 0.50 G in the northern direction (vertical). How strong is the total magnetic field measured by the probe?

1.30 G

500

Which wave has a lower frequency?

Wave 1

500

What's the formula for Snell's Law


M
e
n
u