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In the 1930’s acoustic detection systems able to detect anaircraft at a range of 40.0 km were developed in several countries.The aircraft engines generate a sound intensity level of 95.0 dB ata distance of 10.0 metres from the aircraft, what intensity wouldbe present at the microphone in the detection system 40.0 km awayfrom the aircraft? You may assume that the aircraft is an isotropicsource of sound.
An airplane is to drop an abject to hit a target on the ground. The plane is flying at a constant speed of 300 km/h horizontally, How far in advance should the object be let go in order for it to reach the target
Consider a systen of N non-interacting particles for which the energy of each particle can assume two and only two distinct values: 0 and E (E>0). Find the entropy of the system
A small block with a mass m1 = 4 kg is located at the edge of a disk with a mass of m2 = 20 kg and radius of R = 0.25 m, what is the rotational kinetic energy (in J) of the system
Two skaters with masses of 66kg and 51kg , respectively, stand 7.5m apart, each holding one end of a piece of rope. how far does each skater travel
A small 11.0 g- bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. What is the angular speed of the bar just after the frisky insect leaps
A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. What is the person's mass
In the Biomedical and Physical Sciences building at MSU there are 132 steps from the ground floor to the sixth floor. Each step is 16.6 cm tall. How many food Calories did the person burn during the walk
Imagine a "free" electron and a "free" proton held midway between the plates of a charged equivalent plate capacitor. When released, how do their accelerations and directions travel compare.
The current in a 100 watt lightbulb is 0.740 A. The filament inside the bulb is .230 mm in diameter
A proton takes 99.0 usto complete one orbit around a 14.5 m diameter cyclotron. What's the cyclotron's magnetic field
An incoming 40 keV photon interacts with an atom by the Compton scattering process, what is the energy of the scattered photon
Starting from rest, a 4.30-kg block slides 2.00 m down a rough 30.0° incline. Determine the work done by the force of gravity
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