- D Because v is close to c, the particle is relativistic, so it would be
incorrect to use the formula KE = mv^2. Instead, we must use the formula KE= (λ − 1)mc^2. Since v = c, the relativistic factor isSo, the kinetic energy of this particle is- A Redshift occurs when light sources move away from the observer. If all the
galaxies in the universe are moving away from us, that’s evidence that the
universe is expanding. The Uncertainty Principle is a quantum mechanical
phenomenon having to do with subatomic particles, not galaxies. The
evidence that black holes exist is their gravitational effects on visible objects
near them, not redshift. Dark matter has to do with anomalous rotation curves
in galaxies, not redshift (though redshift—specifically, increasing redshift—
is evidence for dark energy). Superconductivity has to do with conducting
electricity, not galaxies. - B Making simultaneous measurements of position and momentum is limited by
the Uncertainty Principle, a quantum mechanical law.