Acyclotron is to accelerate protons to an energy of 5.4 mev. the superconduction electromagnet of the cyclotron produces a 2.9t magnetic field perpendicular to the proton orbits. when the protons have acheived a kinetic energy of 2.7 mev, what is the radius of their circular orbit and what is their angular speed?

Density of salty water as compared to the density of pure water is(a) is less(b) is always equal(c) is always more(d) may be less or more

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.

How many neutrons does plutonium -196 with an atomic number of 78.