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Sound pressure level (SPL) is an important parameter for the sound engineers. Often the designs of the architects are verified for the feasibility and the acceptance of the sound pressure. The present case is a construction, for which the sound pressure level is already designed, the sound pressure is calculated to verify whether it is falling within the limits
A celebrity holds a press conference, which is televised live. A television viewer hears the sound picked up by a microphone directly in front of the celebrity, determine the maximum distance between the television viewer and the celebrity
A switch, an inductor and a 68.0 Ω resistor are connected in series across an ideal battery E = 9.0 Volt. Estimate what is the value of the inductor
A tank having a volume of 0.100 m3 contains helium gas at 135 atm. How various balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.50 atm.
A 22 nC charge is placed at the origin of an x-y coordinate system. A 16 nC charge is placed at coordinate (0, 8cm) and a -14 nC charge is at (-6cm, 0). What is the electric potential at coordinate (-6cm, 8cm)
A skydiver of 75 kg mass has a terminal velocity of 60m/s. At what speed is the resistive force on the skydiver half that when at terminal speed
A hydrogen atom in the n= 2 state absorbs a photon with wavelength 486nm. Find the change in the orbiting electron's kinetic energy
The metal equilateral triangle in the figure, 20 {rm cm} on each side, is halfway into a 0.10 {rm T} magnetic field.What is the magnetic flux through triangle.
A proton accelerates from rest in a uniform electric ?eld of 677 N/C. At some later time, its speed is 9.4 × 10 5 m/s. how far has it moved in this time interval
A certain automobile manufacturer claims that its super-deluxe sports car will accelerate from rest to a speed of 39.6 m/s in 7.73 s. Find the acceleration of the car
The optical power ofan optical device of focal length f is ? = 1/f,the unit of which is 1/m or m–1 ordiopter. An image is described as real or virtual, inverted ornoninverted, reversed or unreversed, magnified or minfied, and onthe same or the opp..
A microscope uses an eyepiece with a focal length of 1.49 cm. Using a normal eye with a final image at infinity, What is the magnification of the microscope
A pot containing 1.03 liters of water, initially at 19*C, How much heat must be supplied to bring it to a boil
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