The system is at rest with the spring unstretched when θ = 0. the 3.2-kg uniform slender bar is then given a slight clockwise nudge. the value of b is 0.46 m. (a) if the bar comes to momentary rest when θ = 57°, determine the spring constant k. (b) for the value k = 39 n/m, find the magnitude of the angular velocity of the bar when θ = 34°.

12 drag each label to the correct category. decide whether each statement describes mass or weight. measured in newtons measured in kilograms does not change when gravity changes === a gravitational force changes when gravity changes the amount of matter in something mass weight

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

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?