Modern Physics

Moving electrons are found to exhibit properties of

• particles, only

• waves, only

• both particles and waves

• neither particles nor waves

How many kilograms of matter would have to be converted into energy to produce 24.0 megajoules of energy?

• 2.67 × 10^–16 kg

• 2.67 × 10^–10 kg

• 8.00 × 10^–8 kg

• 8.00 × 10^–2 kg

The graph below represents the relationship between energy and equivalent mass from which it can be converted.

• c

• c²

• g

• g²

What is the minimum total energy released when an electron and its antiparticle (positron) annihilate each other?

According to the Standard Model of Particle Physics, a neutrino is a type of

• lepton

• photon

• meson

• baryon

Which particles are not affected by the strong force?

• hadrons

• protons

• neutrons

• electrons

Baryons may have charges of

• +1e and +e

• +2e and +3e

• –1e and +1e

• –2e and –e

A top quark has an approximate charge of

• –1.07 × 10^–19 C

• –2.40 × 10^–19 C

• +1.07 × 10^–19 C

• +2.40 × 10^–19 C

A meson may not have a charge of

• +1e

• +2e

• 0e

• –1e

Protons and neutrons are examples of

• positrons

• baryons

• mesons

• quarks