The length of an aluminium bar of lenth 80cm increase by 1mm on heating. what is the final temperature of the bar if it was initially at temperature 20°c? ( given: coefficient of linear expansion of aluminium = 25×10-6/° c)

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

Which two particles are found in the center of an atom

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.