How do scientists define matter

According to Coulomb's law, the force between two charges acts along the straight line joining the charges.

Which situation will have the highest resistance? A. long wire and high temperature B. short wire and high temperature C. long wire and cold temperature D. short wire and low temperature

A material's ability not to break

6. The two ends of an iron rod are maintained at different temperatures. The amount of heat thatflows through the rod by conduction during a given time interval does notdepend uponA) the length of the iron rod. B) the thermal conductivity of iron.

A student hypothesizes that the bubbles on this water plant are oxygen gas (o2). however, identifying a gas as o2 with direct evidence requires many kinds of equipment. which observation would provide indirect evidence that the bubbles are not o2? a.

Ultrasound consists of sound at frequencies most people can hear?

Ali has less mass flying in a jet high above the earth than when she stands on the surface of the earth. True False

A passenger jet flies from one airport to another 1,333 miles away in 2.2 h. Find its average speed in the mks system of units.

A string is wound tightly around a fixed pulley whose radius is 5.0 cm. As the string is pulled, the pulley rotates without slipping. What is the angular speed of the pulley when the string has a linear speed of 5.0 m/s?

If an astronomical light source were moving toward us, then what would be observed? (a) a blue shift (b) a shift toward longer wavelengths (c) a shift toward lower frequencies (d) a sonic boom