f= PN 60 where f-frequency in hertz P= number of pairs of poles N= revolution per minute

Q: You have your ear against a new speaker when it emits a sounds with an intensity of 160 decibels

A: 1)Sounds below 70db don't cause any hearing damage.   2) Beyond 70db sounds isn't good for your ears…

Q: A car leaves the city traveling north at a constant speed of 60 miles per hour. A second car leaves…

A: The details solution of the given question is given below in step 2.

Q: Find the revolutions per second of a 33 inch diameter wheel on a car traveling exactly 70 miles per…

A: Given: A car traveling with 70 miles per hour. That is, And

Q: A rock concert was measured to be 6.9 x 10-6 watts/cm2. Find the number of decibels for the power of…

A: Given The given intensities of the sound is 6.9×10-6 watts/cm2. Apply formula For decibel level…

Q: "A Kite 65 feet above the ground moves horizontally at a speed of 6 ft/s. At what rate is the angle…

A: Given a kite 65 feet above the ground moves horizontally at a speed of 6 ft/s.

Q: If the car is traveling 65 miles per hour, about how many times per second does the wheel rotate?

A: we know that 1 mile=1.609344 kmand car is travelling 65 miles =65×1.609344 km=104.60 kmthat is car…

Q: A hot air balloon rising upwards is noticed by an observer who is 4 miles from where it is released.…

A: Given that a hot air balloon is rising vertically and being tracked by an observer located 4 miles…

Q: Suppose a cyclist was using a 150-millimeter-diameter chainring and an80-millimeter- diameter…

A: Given: Let, dc  and rc denotes the diameter and radius of Chainring respectively and ds  and  rs…

Q: Why would a sine function be used to model the number of daylight hours?

A: We have to explain why a sine function is used to model the number of daylight hours.

Q: the answer came out to be arccos(-1/-10)/1 Could you explain this to me?

A: Given that,fx=x-10sinxWe need to find the least positive value of x for which f has a horizontal…

Q: Two trains on separate tracks move toward each other. Train 1 has a speed of 120 km/h; train 2, a…

A: Given that, frequency of horn of train 2 is 500 Hz, velocity of train 2 is 91 km/hr,  velocity of…

Q: A rock concert was measured to be 8.1 x 10-6 watta/cm2. Find the number of decibels for the power of…

A: A rock concert was measured to be 8.1 x 10-6 watta/cm2.

Q: A pedestrian crosses diagonally from one corner of a two kilometer by three kilometer City Park to…

A: Consider the provided question, Given a city park has dimension 2 km x 3 km. Here, width (b) of the…

Q: What is the decibel level of a sound with intensity 10 5 watts per square inch.

A:

Q: What is the rate of the current in miles per hour?

A: