Atruck is traveling 70.0 kph away from you. the driver is blowing the horn, which has a frequency of 400 hz. the air temperature is 25ác. what is the observed frequency of the horn?

Avoltaic cell converts chemical energy to

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

Abeverage can is made of 3004-h19 aluminum alloy (elastic modulus 69 gpa, tensile yield strength 285 mpa, density 2.72 g/cm^3). the dimensions on the can are approximated as a thin-walled cylinder with a height of 4.83 inches, diameter of 2.60 inches. empty the can has a mass of 14.2 g. determine: a. the wall thickness of the cylinder b. assuming a pinned-pinned condition what is the critical load? c. assuming a fixed-fixed condition what is the critical load?