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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?
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..
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 amplitude 9.60 m at t 0.71 s. assume that the wave number
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 located at 00 and particle 2 at 64. use your knowledge of
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
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.
a positive charge q1 is located to the left of a negative charge -q2. on a line passing through the two charges there
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
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 pulses of increased sound intensity per second are heard.
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
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