How do the densities of the solid and liquid states of water relate to the particles that make up each type of matter ?

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

If steel is more dense that lake water, why can a boat float