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A soprano sings the note C6 (1046 Hz) across the mouth of a soda bottle. To excite a fundamental frequency in the soda bottle equal to this note, describe how far the top of the liquid must be below the top of the bottle. The top of the liquid must be from the top of the bottle.
A 12kg box is decelerated from an initial speed of 20m/s to rest in a distance of 13m while traveling up a 42 degree incline. What was the net work done on the box by friction
A cart that has a mass of 100 kg goes around a vertical loop at a constant speed of 10 m/s. Determine the force that the seat pushes on you with v = 7r at the top of the loop
A block of weight W = 13.5 N, which can slide without friction on a 27.5o incline, By how much will the spring be stretched
The 80 cm-tall, 68 cm wide tank is completely filled with water. The tank has marks every 10 cm along one wall, find Which is the lowest mark you can see
When a synchronous motor is running at synchronous speed, the damper windingproduces(A) damping torque.(B) eddy current torque.(C) torque aiding the developed torque.(D) no torque.
A 509-?F capacitor is discharged through a resistor, whereby its potential difference decreases from its initial value of 97.9 V to 22.7 V in 4.99 s. Find the resistance of the resistor in kilohms
Light has a wavelength of 299.3 nm and a frequency of 7.403 × 1014 Hz when traveling through a certain substance. What is the refraction index of this medium
A glass U-tube with a uniform diameter of 0.850 cm is used to determine the density of an oil. Calculate the density of the oil
Throughout three hours one winter afternoon, when outside temperature was 9° C, a house heated by electricity was kept at 21° C with the expenditure of 46kwh (kilowatt•hours) of electric energy.
When an atom emits a photon in a transition from a state of energy E1 to a state of energy E2, Evaluate this recoil energy for the n = 2 to n = 1 transition of hydrogen.
It leaves the track horizontally, flies through the air, and subsequently strikes the ground. Elucidate the speed v of the block when it leaves the track?
question1as thermonuclear fusion proceeds in its core the sun loses mass at a rate of 3.64 109 kgs. for the duration of
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