Abicycle wheel has a diameter of 63.2 cm and a mass of 1.89 kg. assume that the wheel is a hoop with all of the mass concentrated on the outside radius. the bicycle is placed on a stationary stand and a resistive force of 123 n is applied tangent to the rim of the tire. (a) what force must be applied by a chain passing over a 9.02-cm-diameter sprocket in order to give the wheel an acceleration of 4.43 rad/s? 880.35 (b) what force is required if you shift to a 5.62-cm-diameter sprocket? 1412.95x your response is off by a multiple of ten.

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward

Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons