Physics, 18.11.2019 20:31 paulesparsa6
(a) a force f = (3xî + 4yĵ), where f is in newtons and x and y are in meters, acts on an object as the object moves in the x-direction from the origin to x = 5.18 m. find the work w = f · dr done by the force on the object (in j). j (b) what if? find the work w = f · dr done by the force on the object (in j) if it moves from the origin to (5.18 m, 5.18 m) along a straight-line path making an angle of 45.0° with the positive x-axis. j is the work done by this force dependent on the path taken between the initial and final points? dependent independent
Answers: 1
Physics, 21.06.2019 23:30, mmaglaya1
Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.
Answers: 1
Physics, 22.06.2019 02:10, lolsmaster3951
Which statement correctly describes the relationship between frequency and wavelength?
Answers: 2
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.
Answers: 1
(a) a force f = (3xî + 4yĵ), where f is in newtons and x and y are in meters, acts on an object as t...
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