At what speed do a bicycle and its rider, with a combined mass of 110 kg , have the same momentum as a 1800 kg car traveling at 5.0 m/s

The heliocentric and the geocentric models of the solar system included these central principles

When can a theory be modified if a new type of technology allows for new observations that raise new questions? a-immediately, while the questions about the theory are being asked b-after new hypotheses related to the theory are tested in experiments c-only after the new observations disprove all parts of the theory d-while scientists begin to think about how the theory could improve

Ideal meters problem. what internal resistance is ideal for a voltmeter? what internal resistance is ideal for an ammeter?