If the voltage, v, in an electric circuit is held constant, the current, i, is inversely proportional to the resistance, r. if the current is 90 milliamperes when the resistance is 4 ohms, find the current when the resistance is 12 ohms. if the voltage, v, in an electric circuit is held constant, the current, i, is inversely proportional to the resistance, r. if the current is 420 milliamperes when the resistance is 2 ohms, find the current when the resistance is 14 ohms.

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.