What are the two types of magnets?

A wave has the wavelength equal to 396 nm. what must be the frequency of this wave

A 30 kg dog runs at a speed of 15 m/s. What is the dog's kinetic energy (in jewels) ? Round the answer to two significant digits.

How do you determine the gradiant of an graph

Batteries and generators are examples of voltage sources which create a potential differences in a circuit? true or false

Unlike fireflies and glow worms, most objects don't make their own light. So how can you see what's around you?

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.