Your friend just challenged you to a race. You know in order to beat him, you must run 50 meters within 60 seconds in an eastern direction. What does your average velocity need to be to win the race? (2 points)
.5 meters per second, east
Ob
.83 meters per second, east
1.2 meters per second, east
Od
3000 meters per second, east

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.