Which two chemical equations are balanced? A. 2Na+ MgCl2 → 2NaCl + Mg.
B. 2LIOH + 2H2S Li2S + 2H20
I c. 2AgNO3 + NaCl-NaNO3 + 2AGCI
D. 2PBr3 + 3Cl2 - 2PCl3 + 3Br2

What happens to light waves from a star as the star moves away from earth?

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.