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At 28 millimeters from a sound source, the intensity level is 70 dB.
A) Determine what is the level at distance of 75 meter?
B) Determine what is the level at distance of 266 meter?
250.0 gram industrial mold absorbs 5,575 calories of heat when it is filled with an alloy. If the specific heat of the mold is 0.275 calories per gram degree Celsius, explain by how much does its temperature rise?
Light of wavelength 542 nm falls on a double slit. First-order bright bands appear 4.00 cm from the central bright line. The screen is 1.20 m from the slits. How far apart are the slits?
In one day, a 85 kg mountain climber ascends from the 1440 m level on a vertical cliff to the top at 2360 m . The next day, she descends from the top to the base of the cliff, which is at an elevation of 1310 m
A car traveling at 93km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.75 m. What was average acceleration of the driver during the collision? Express the answer in terms of "g's," where 1.00g ..
a simple harmonic oscillator consists of a 100 g mass attached to a spring whose force constant is 104 dyne cm. the
According to a crude model, the 11B nucleus is a uniform solid sphere of mass 1.83*10^-26 kg and radius 2.67*10^-15 m which spins about its diameter. what is the angular velocity of the boron nucleus
A diver 32.0 m deep in 8.00 °C fresh water exhales a 1 cm diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where water temperature is 25°C? Hint: suppose the air bubble is always in thermal equilibrium wit..
An electric generator has a 20-turn coil of area 0.04 m2 rotating uniformly at 60 rev/s in a magnetic field of 1.0 T, Calculate the peak value of the induced voltage
In order to overcome a surface tension of a liquid, a force of1.32x10-2N is required to lift a wire ring ofcircumference 12.0cm. What is the surface tension of the liquid?
q1. charge of uniform density 80 ncm3 is distributed throughout a hollow cylinder region formed by two coaxial
A string is wrapped tightly around the circumference of a wheel with a mass of 1.23 kg and a radius of 0.324 m. What is the moment of inertia of the wheel
Orb spiders make silk with a typical diameter of 0.15 .A typical large orb spider has a mass of 0.50. If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch
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