Jenna is standing in the middle of two identical loudspeakers that are 3 m apart and face each other. The speakers are driven in phase by the same oscillator at a frequency of 873 Hz. The speed of sound in the room is 345 m/s. Find the shortest distance in centimeters Jenna can walk toward either speaker in order to hear a minimum of sound. Please give your answers with 1 decimal place.

Iron reacts with sulfur to form iron sulfide. if 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?