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A person with very good musical pitch listens to a guitarist on a moving stage play a high A (880 Hz) while the stage is moving away at 4.0 m/s on a cold day, 0 °C. What frequency does this person hear? If they can discriminate 0.25 Hz can they tell the difference between this note from a moving guitarist and a stationary guitarist?
i accurately draw the field both scalar equipotential and vector electric lines between a positive point charge and an
an object at point 0 is travelling along at a leisurely 30m/s. all of a sudden it accelerates at 2m/s^2 for 2 minutes. how far did it travel from its starting point
A record of travel along a straight path is as follows: What was the total displacement x for the complete trip? Answer in units of m
A circuit contains six 240 ohm lamps with 60 W bulbs and a 10 ohm heater connected in parallel. the voltage across the circuit is 120 V. If the circuit has a fuse rated at 12 A, would it melt if everything is on.
After falling from rest from a height of 29 m, a 0.49-kg ball rebounds upward, reaching a height of 19 m. find average force was exerted on the ball
Two plane mirrors are placed parallel to each other 20 cm apart. A luminous object is placed betweenthem 5 cm from one mirror. Determine the distance from each mirror of the three nearest images in eachmirror.
Two sheets of polarizing material are placed with their transmission axes at right angle to one another. What is the intensity of the transmitted light when the middle sheet is removed
A quantity of gas in a piston cylinder has a volume of 0.456 m3. If the gas is initially at room temperature (20°C) and is heated in an isobaric (constant-pressure) process, then what will be the temperature of the gas in degrees Celsius when it h..
A string with both ends held fixed is vibrating in its third harmonic. Calculate the amplitude at point on the string a distance of 23 cm from the left-hand end of the string
A wire of length, L, and mass density, ?, is positioned parallel to and directly over another much longer wire. what is the seperation between the two wires
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (-196°C) and in boiling allyl alcohol (97°C). Find what pressure would be found at the freezing point of water
A lens which is 40.0 cm from an object forms an image of the object on a card 20.0 cm away. Determine what is the focal length of the lens? If the height of the image is .75 cm, what is the height of the object?
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