What sound level is heard

Assignment Help Physics
Reference no: EM13677959

When standing a certain distance from a jet on the ground on which all three engines are running at equal power, the sound level is heard at the threshold of pain, 120dB. (A) If the pilot shuts down 2 engines however leaves the 3rd at the same power, what is the sound level that is heard? (B) When at a different distance, the same jet is heard initially at 95dB. At that point after two engines are shut off, what sound level is heard?

Reference no: EM13677959

Questions Cloud

Discover the maximum displacement current : In a region of space, the electric field varies according to E = (0.06 N/C) sin 2100t, where t is in seconds. Discover the maximum displacement current during a 1 m2 area perpendicular to vector E
Two plastic spheres are given positive electrical charges : Two small plastic spheres are given positive electrical charges. When they are a distance of 16.0cm apart, the force among them has a magnitude of 0 235N. What is the charge on the second sphere? What is the charge on each sphere if the two charges a..
Mission control sends a brief wake-up call to astronauts : Mission control sends a brief wake-up call to astronauts in a far away spaceship. 6.8 seconds after the call is sent, Mission Control can hear the groans of the astronauts. How far away (at most) from Earth is the spaceship?
Skeletal-cardiac or muscle tissue problem : Please answer either skeletal, cardiac, or smooth (muscle tissue) for each problem. Voluntary muscle tissue. Muscle tissue that is multinucleate. Muscle tissue found only in the heart. Performs very slow, sometimes rhythmic, contractions.
What sound level is heard : When standing a certain distance from a jet on the ground on which all three engines are running at equal power, the sound level is heard at the threshold of pain, 120dB. (A) If the pilot shuts down 2 engines however leaves the 3rd at the same power,..
How high is the balloon when the rock hits the ground : A 124-kg balloon carrying a 22-kg basket is descending with a constant downward velocity of 19.3m/s A 1.0-kg stone is thrown from the basket by an initial velocity of 12.1m/s perpendicular to the path of the descending balloon, as gauged relative to ..
The cost of electricity varies widely : The cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value. At this unit price, compute the cost of the following. Leaving a 40.0-W porch light on for two weeks while you are on vacation.
What is the power loss due to resistance in the line : A high-voltage transmission line with a resistance of 0.29 /km carries a current of 1030 A. The line is at a potential of 690 kV at the power station and carries the current to a city located 162 km from the station.
Discover the electric field at a position : Three narrow concentric rings of radii 50 mm, 70 mm and 90 mm are centered at the origin, with the axis of symmetry oriented along the y-axis.  The total charge on the inner ring is 1.0mC, that on the middle ring is -2.0 mC and the charge on the oute..

Reviews

Write a Review

Physics Questions & Answers

  What is intensity of the light source

You set up an experiment with two polarizer screens on an optical bench and collect data for the intensity of the light at the detector as you vary the relative angle between the transmission axes of the polarizers. What is intensity of the light s..

  Microwave oven is powered by electron tube called magnetron

A microwave oven is powered with an electron tube called a magnetron that generates electromagnetic waves of frequency 2.30 GHz. The microwaves enter the oven and are reflected with the walls.

  Q1 determine the displacement of a simple harmonic wave of

q1. determine the displacement of a simple harmonic wave of amplitude 9.60 m at t 0.71 s. assume that the wave number

  Compute what the initial speed of bullet

A 7.0 gram bullet shoots into 1.5 kilogram ballistic pendulum. Bullet emerges with velocity 200 m/s, and pendulum rises to max of12 centimeter. Compute what the initial speed of bullet

  There are two particles in the xy-plane particle one is

there are two particles in the xy-plane particle one is located at 00 and particle 2 at 64. use your knowledge of

  Find the overpressure of the water in the pipe

A pipe with a diameter of 2.88 cm is carrying 134 liters/minute of water with an overpressure (gauge pressure) of 3.65 atmospheres. Find the overpressure of the water in the pipe at the top of the building

  What is the velocity v of smaller fish before lunch

Two speakers, 6.00 m apart, are driven by the same audio oscillator so that each one produces a sound consisting of two distinct frequencies, 1000 Hz and 1360 Hz. The speed of sound in the room is 350 m/s.

  The first place is 400 cm to the left of the negative

a positive charge q1 is located to the left of a negative charge -q2. on a line passing through the two charges there

  Determine the efficiency of the solar cells

A solar cell has a light-gathering area of 10 cm^2 and produces 0.2 A at 0.8 V (DC) when illuminated with S = 1000 W/m^2 sunlight. What is the efficiency of the solar cell

  How many kilograms of ethyl alcohol would freeze

Suppose that the amount of heat removed when 2.8 kg of water freezes at 0.0 oC were removed from ethyl alcohol at its freezing/melting point of -114.4 oC. How many kilograms of ethyl alcohol would freeze

  Question1when two tuning forks are struck simultaneously 9

question1when two tuning forks are struck simultaneously 9 pulses of increased sound intensity per second are heard.

  Obtain the change in the internal energy of the gas

Three moles of an ideal monatomic gas are at a temperature of 345 K.  What is the change in the internal energy of the gas

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd