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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 28.2 m apart and the total power of the sound coming from each speaker is 0.470 W.
(a) Find the total sound intensity that the man hears when he is at his initial position halfway between the speakers.
(b) Find the total sound intensity that the man hears after he has walked 4.4 m directly toward one of the speakers
An engine absorbs 1.72 kJ from a hot reservoir at 277°C and expels 1.24 kJ to a cold reservoir at 27°C in each cycle. What is the power output of the engine if each cycle lasts 0.303 s
What is the change in internal energy of a system that takes in 2.80 x 106 J of heat, and does 4.50 x 105 J of work while dissipating 6.00 x 106 J of heat
A proton enters the gap between a pair of metal plates (an electrostatic separator) that produces a uniform, vertical electric field between them. Ignore the effect of gravity on the proton.
q1. in an 8.00 km race one runner runs at a steady 11.0 kmh and another runs at 14.3 .kmhr.how far from the finish line
An rms voltage of 19.5V with a frequency of 1.50kHz is applied to a 0.365μF capacitor. What is the rms current in this circuit? By what factor does the current change if the frequency of the voltage is doubled?
Use conservation of energy to calculate the speed of the alpha particle at infinity. m/s (e) If the two protons are released from rest and the alpha particle remains fixed, calculate the speed of the protons at infinity. m/s
A shell is shot with an initial velocity of 29 m/s, at an angle of ?0 = 62° with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass (see the figure). One fragment, whose speed immediately after the explo..
A game of tug of rope is being played. The rope is being pulled with a force of 18 N East and 20 N West. What is the net force on the rope
A dolphin located in seawater at a temperature of 25 °C emits a sound directed toward the bottom of the ocean 200m below. How much time passes before it hears an echo.
You have a 200 ohm resistor, a 0.400 H inductor, and a 6.00 mF capacitor. Suppose you make a series circuit with the resistor, the inductor, the capacitor, Find the angular frequency omega of the voltage source
If the fish starts from a distance 1.09 m from the base of the ledge over which the waterfall flows, Can the fish make this jump
Calculate the acceleration of a skier heading down a 10.0 deg, slope, assuming the coefficient of friction for waxed wood on wet snow
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