1) Sodium ions (Na') move at 0.85 m/s through a bloodstream in the arm of a person standing near a large magnet. The magnetic
field has a strength of 0.25 T and makes an angle of 51.0 degrees
with the motion of the sodium ions. Assuming no other ions are
present in the arm, what would be the magnetic force on any of
these ions? (Na has a charge of 1.60 x 10" C)

Juan created a chart to him study for a test. which headings best complete the chart? x: transparent objects y: opaque objects x: opaque objects y: transparent objects x: high frequency waves y: low frequency waves x: low frequency waves y: high frequency waves

Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.

Heterogeneous mixture with larger particles that never settle is