What is the resultant velocity of an object experiencing these two velocities at the same time? 40 m/s
80 m/s
3200 m/s
120 m/s
89 m/s
40 m/s
4

An ambulance emits a frequency of 450 hz from its siren. what frequency is heard by a man as the ambulance moves toward him? less than 450 hz more than 450 hz 450 hz 0 hz

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

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?