Let the position of a point p in three dimensions be given by the vector r-cx, y,z) in rectangular (or cartesian) coordinates. the same position can be specified by cylindrical polar coordinates, p, φ, z, which are defined as follows: let p' denote the projection of p onto the xy plane: that is, p' has cartesian coordinates (x, y, 0). then rho and φ are defined as the two-dimensional polar coordinates of p' in the xy plane, while z is the third cartesian coordinate, unchanged. (a) make a sketch to illustrate the three cylindrical coordinates. give expressions for rho, φ, z in terms of the cartesian coordinates x, y, z. explain in words what rho is ("rho is the distance of p from are many variants in notation. for instance, some people use r instead of p. explain why this use of r is unfortunate. (b) describe the three unit vectors rho, φ,2 and write the expansion of the position vector r in terms of these unit vectors. (c) differentiate your last answer twice to find the cylindrical components of the acceleration a ř of the particle. to do this, you will need to know the time derivatives of rho and φ. you could get these from the corresponding two-dimensional results (1.42) and ( 1.46), or you could derive them directly as in problem 1.48. ").
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Physics, 22.06.2019 09:00, rhettperkins
One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form
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Physics, 22.06.2019 12:00, jazz8224
The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?
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Physics, 22.06.2019 14:20, timothyashburn8
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.
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Let the position of a point p in three dimensions be given by the vector r-cx, y,z) in rectangular (...
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