Now we’re going to roll that wheel down a hill. Suppose it has a mass of 1 kg and a radius 0.5 m, and it rolls without slipping down a ramp of angle θ = 30°. Find the size and direction of the frictional force by the ramp on the wheel. Here’s some help doing that. a) Suppose the wheel starts from rest and rolls a distance l down the ramp. What is the change in its gravitational potential energy? b) Assume all of that energy goes into kinetic energy. Use what you know from the last problem, and find the speed of the wheel as a function of l, the distance it has rolled along the ramp. c) Knowing the speed v of the wheel after it has moved a you can find the linear acceleration of the center of mass. d) Knowing the acceleration, you can now find the size and direction of the friction force by the ramp on the wheel. Does the result make sense?

Use the frequency histogram to complete the following parts. ​(a) identify the class with the​ greatest, and the class with the​ least, relative frequency. ​(b) estimate the greatest and least relative frequencies. ​(c) describe any patterns with the data. female fibula lengths 30.5 31.5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 39.5 0 0.05 0.1 0.15 0.2 0.25 length (in centimeters) relative frequency a histogram titled "female fibula lengths" has a horizontal axis labeled "length in centimeters" from 30.5 to 39.5 in increments of 1 and a vertical axis labeled "relative frequency" from 0 to 0.25 in increments of 0.05. the histogram contains vertical bars of width 1, where one vertical bar is centered over each of the horizontal axis tick marks. the approximate heights of the vertical bars are listed as follows, where the label is listed first and the approximate height is listed second: 30.5, 0.02; 31.5, 0.04; 32.5, 0.05; 33.5, 0.13; 34.5, 0.22; 35.5, 0.25; 36.5, 0.13; 37.5, 0.06; 38.5, 0.09; 39.5, 0.01. ​(a) the class with the greatest relative frequency is nothing to nothing centimeters. ​(type integers or decimals. do not round. use ascending​ order.)

Does anyone have the answers to online physics course plato course physics, semester a v3.0

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)