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Question: Two in-phase loudspeakers emit identical 1000 Hz sound waves along the x-axis. What distance should one speaker be placed behind the other for the sound to have an amplitude 1.20 times that of each speaker alone? The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.
A heavy-duty stapling gun uses a 0.164 kg metal rod that rams against the staple to eject it. The rod is pushed by a stiff spring called a "ram spring" (k = 30071 N/m). find the speed of the ram at the instant of contact
A resistor (R = 900 ?), a capacitor (C = 0.25 µF), and an inductor (L = 4.0 H) are connected in series across a 240 Hz AC source for which ?Vmax = 100 V. estimate the phase angle between the current and voltage
what is the meaning of a ground speed? Justify why the ground speed is different from air speed. Will there ever be conditions under which the ground speed and the air speed be the same
Consider a galvanometer with an internal resistance of 60Ω. If the galvanometer is being used as an ammeter (with no additional resistance) it deflects full scale when it carries a current of 0.5 mA.
Due to a tune-up, the efficiency of an automobile engine increases by 3.50 %. For an input heat of 1260 J, how much more work does the engine produce
A 50 g aluminum calorimeter contains wter at a temperature of 26 C. When 75 gof lead at a temperature of 85 C is dropped into the calorimeter, How much water was in the calorimeter can
If the energy that goes into evaporating one kilogram of water from Lake Michigan at 22.0 oC, how high (in m) would it be lifted
Show that the time-average value of the magnitude of the Poynting vector given by (4.68) is one-half its peak value. For an antenna radiating a time-average power of 150 kW, find the peak value of the electric field intensity at a distance of 100 ..
A 2000 kg car is slowed down uniformly from 21.0 m/s to 10.00 m/s in 3.60 s. (a) what average total force acted on the car all through that time? (b) How far did the car travel all through that time.
A 4.0 kilogram particle starts from rest at x = 0 and moves under the influence of a single force Fx = 6 +4x - 3x2, Determine the work done by the force as the particle moves from x = 0 to x = 1.0 meter
To push a 24 kg crate up a frictionless incline, angled at 19° to the horizontal, a worker exerts a force of 99.5 N, What is the total work done on the crate
Two carts with masses of 4.5 kg and 3.9 kg move toward each other on a frictionless track with speeds of 5.6 m/s and 4.3 m/s, respectively. The carts stick together after colliding head-on.
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