Acomplete series circuit consists of a 12.0 v battery, a 4.70 o resistor, and a switch. the internal resistance of the battery is 0.30 o. the switch is open. what does an ideal voltmeter read when placed across the terminals of the switch?
12.0 v
9.40 v
2.40 v
zero

Aball is thrown upward in the air, and its height above the ground after t seconds is h ( t ) = 57 t − 16 t 2 feet. find the time t when the ball will be traveling upward at 14.25 feet per second.

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane