An object with mass 3.0 kg is executing simple harmonic motion, attached to a spring with spring constant 280 n/m. when the object is 0.017 m from its equilibrium position, it is moving with a speed of 0.45 m/s. calculate the amplitude of the motion. express your answer to two significant figures and include the appropriate units. ?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

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.