(b) a potential difference v is applied across a conductor of length l and diameter d. how is uhe resistance r of the conductor affected, when in turn () v is halfed (i) l is halved and (ii) d is doubled? justify your answer in cach case.

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire

What is a subatomic particle with a negative charge and very little mass?

Atypical jetliner lands at a speed of 146 mi/h and decelerates at the rate of (10.4 mi/h)/s. if the jetliner travels at a constant speed of 146 mi/h for 1.5 s after landing before applying the brakes, what is the total displacement of the jetliner between touchdown on the runway and coming to rest?