The potential difference across a resistor increases by a factor of 2. how does the current change? (ohm's law: v = ir) a. it decreases by a factor of 2. b. it increases by a factor of 4. c. it increases by a factor of 2. d. it decreases by a factor of 4.

Why does the input force have to be greater than the force needed to lift the bale?

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k