The resistivity of iron is 1 x 10 - 7 Ωm. The resistance of a iron wire of particular length and thickness is 1 ohm. If the length and the diameter of wire both are doubled, then the resistivity in Ωm will be

Red, green, and blue light rays each enter a drop of water from the same direction. Which light ray's path through the drop will bend the most, and which will bend the least? Why?

If you roast a marshmallow is it a chemical or physical change

Identify the theory that can be used to explain each phenomenon. Diffraction: Interference: Reflection: Refraction:

Mrs. Garcia's earth science class conducted an experiment on how Earth absorbed solar radiation. They placed four different sheets of colored paper around the playground: white, tan, green, and black.

A man has a mass of 85kg, what is his weight

A person lifts a 4.5 kg cement block a vertical distance of 1.2 m and then carries the block horizontal - ly a distance of 7.3 m. determine the work done by the person and by the force of gravity in this process.

A tree is standing in the middle of a meadow. As you watch, the wind begins to blow and the tree bends. Which statement best explains how you could tell that a net force was acting on the tree? OA) The tree had momentum.

A 5.1 kg black bear cub weighs 49.98 N. The cub is carried by its mother up into the safety of a white pine tree.

Which location is associated with persistent upwelling of cold water to the ocean surface?

What type of electromagnetic radiation is associated with the peaks in this spectrum chem 237?