A person shopping in a grocery store walks 12 meters north down an aisle then 10 meters east, then 3 meters north to get some peanut butter, What is the shoppers displacement? Write your answer without units,

Afixed electric space heater wired by a cable with an ampacity of 30 a should draw a maximum current of a. 30 a. b. 24 a. c. 15 a. d. 27 a.

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

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.