Consider a copper-based material containing precipitates with an average spacing of 500 nm. The contribution of these precipitates to the yield strength of the alloy is 200 MPa. If the precipitate spacing were decreased to 200 nm, what would be the new contribution of the precipitates to the yield strength of the alloy?

it breaks and dirupture other materials and other sencews from the bottom

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27