7. A solenoid with ends marked A and B is suspended by a thread so that the core can rotate in the horizontal
plane. A current is maintained in the coil so that the
electrons move clockwise when viewed from end A
toward end B. How will the coil align itself in Earth's
magnetic field?

What if? physicists often measure the momentum of subatomic particles moving near the speed of light in units of mev/c, where c is the speed of light, and 1 mev = 1.6 ✕ 10−13 kg · m2/s2. based on this, what are the units of momentum for a high-speed subatomic particle in terms of fundamental si units?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.