1. (-/2 Points] DETAILS MY NOTES ASK YOUR TEACHER A current of 84.6 mA exists in a metal wire. (a) How many electrons fl

[answerhappygod]

1 2 Points Details My Notes Ask Your Teacher A Current Of 84 6 Ma Exists In A Metal Wire A How Many Electrons Fl 1 (55.89 KiB) Viewed 49 times

1. (-/2 Points] DETAILS MY NOTES ASK YOUR TEACHER A current of 84.6 mA exists in a metal wire. (a) How many electrons flow past a given cross section of the wire in 10.5 min? electrons (b) In what direction do the electrons travel with respect to the current? same direction The magnitude is zero. opposite direction Viewing Saved Work Revert to Last Response Submit Answer 2. (-/1 Points) DETAILS MY NOTES ASK YOUR TEACHER A certain laboratory experiment requires an aluminum wire of length of 36.0 m and a resistance of 3.50 at 20.0°C. What diameter wire must be used? (The resistivity of aluminum at 20.0°C is 2.82 x 10-4- m.) mm 3. [-/1 Points] DETAILS MY NOTES ASK YOUR TEACHER A platinum resistance thermometer has resistances of 170.0 2 when placed in a 0°C ice bath and 241.82 when immersed in a crucible containing a melting substance. What is the melting point of this substance? (Hint: First determine the resistance of the platinum resistance thermometer at room temperature, 20°C.) °C