On January 22, 1943, the temperature in Spearfish, South Dakota, rose from -4°F to 45°F in just 2 minutes. What was the temperature change in Celsius degrees? 27.2
35.4
18.7
or
40.1

Aphysical change is a change in the size, shape,, or stafe of matter true or false

Match each scenario to the form of energy it represents

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.