1.) the 225 N force is exerted on the crate towards the North and the 165 N force is exerted toward the east. Find the magnitude and direction of the net force (angle away from north). 2.) your hand exerts a 6.5 N upward force on a pound of sugar. Considering the force of gravity (a= -9.8 m/s/s) on the sugar, what is the net force on the sugar? give magnitude and direction.

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

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

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.