What has a positive charge a comb or an elastic band? Why?

Natalia is studying a wave produced in her magnetics lab. This wave can move through the empty space in a vacuum and carries a lot of energy. What wave is Natalia most likely studying?

Density: Two blocks, A and B, are put in a tank of water. Block A has a density of 1.21 g/cm³. Block B has a density of 1.37 g/cm³. Which will float higher in the water?

Which of the following represent units of an electric field? select all that apply Newton Meters Volts/Meter Voltmeter Newtons/meter Joules/Coulomb Newtons/Coulomb

What is free-fall acceleration on the surface of the moon?

Which is a longitudinal wave that requires a medium to move? A. sound wave B. Ocean wave C. Lightwave D. Radio wave E. Microwave

Find the difference in the pressure between the Dead Sea (400m below) and Amman (1000m above) the sea level. The density of the air = 1.29 kg/m3

Which type of institution employs the most forensic anthropologists on a full time basis?

The cost, density and resistivity of copper, steel and aluminium

How do the charges compare when two objects are charged through friction? The objects become oppositely charged and have equal amounts of charge. The objects become positively charged and have equal amounts of charge.

Potential energy and kinetic energy are forms of what kind of energy? 1. chemical 2. nuclear 3. electromagnetic 4. heat 5. mechanical