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A crude model of the human vocal tract treats it as a pipe closed at one end.Find the effective length of the vocal tract in a person whose fundamental tone is 550Hz . Sound speed in air at body temperature is 354 m/s.
A 9.0 V battery and three resistors are all connected in series. What is the potential difference across the third resistor
Gas is confined in a tank at a pressure of 11.9 atm and a temperature of 23.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 76.0°C
The index of refraction for violet light in silica flint glassis 1.66, and that for red light is 1.62. What is the angulardispersion of visible light passing by an equilateral prism ofapex angle 60.0° if the angle of incidence is 50°.
White light (380nm-750nm) strikes a diffraction grating (770 lines/mm) at normal incidence. What is the highest-order visible maximum that is formed
A 250 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 3.5 N/cm, What is the speed of the block just before it hits the spring
The tungsten filament of a certain 100 W light bulb radiates 4.00 W of light. Find the filament's temperature
A 14292 kg railroad car is rolling at 1.21 m/s when a 3365 kg load of gravel is suddenly dropped in. What is the cars speed just after the gravel is loaded
A person in a car is driving down a straight road. The instantaneous acceleration is decreasing with time, What is happening to the speed of the car
A 4.90-kg ball, moving to the right at a velocity of +2.14 m/s on a frictionless table, Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic
What is the Professors initial velocity. He is pushed a distance 3.00 m along the incline by a group of students who together exert a constant horizontal force of 595 N. The professor's speed at the bottom of ramp is 1.70 m/s.
A plastic film of thickness 290 nm appears to be green (?green = 510 nm), What is the plastic's index of refraction
q1. a rabbit runs in the straight line with a velocity of 1.6 ms for a period of time rests for 12 s and then runs
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