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A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. The speakers are 29.4 m apart and the total power of the sound coming from each speaker is 0.465 W.
(a) Find the total sound intensity that the man hears when he is at his initial position halfway between the speakers.
W/m2
(b) Find the total sound intensity that the man hears after he has walked 4.1 m directly toward one of the speakers.
A spaceship travels at a constant speed from earth to a planet orbiting another star. compute How far away is the planet
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A 150-? resistor is connected in series with a 0.250-H inductor. The voltage across the resistor is vR = (5.70 V)cos[(445 rad/s)t]. Determine the inductive reactance of the inductor
A movie camera with a (single) lens of focal length 70 mm takes a picture of a person standing 24 m away. what is the height of the image in millimeters on the film
Sherlock Holmes examines a clue by holding his magnifying glass (with a focal length of 15.0 cm) 10.0 cm away from an object. Find the image distance and the magnification. explain the image that he observes.
A 100.0 m long rod with a diameter of 3.0 mm has a charge of 1032 C. What is the approximate electric field 3 mm from the surface of the rod
The density of air at standard temperature and pressure (STP) is 1.20 kg/m^3 how much mass could this balloon carry
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