A solid 0.125 in. diameter steel [E = 30,000 ksi; α = 6.5 × 10−6/°F] wire is stretched between fixed supports so that it is under an initial tensile force of 40 lb. If the temperature of the wire drops by 75°F, what is the tensile stress in the wire?

Like a key in a lock, the shape of the. must bind with the. of the recieving neuron

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen