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Compute the each part of following problem given below:
Problem: An outside loudspeaker (considered a small source) emits sound waves with a power output of 90 W.
Part I: Find the intensity 10.0 m from the source.
W/m2
Part II: Find the intensity level in decibels at that distance.
dB
Part III: At what distance would you experience the sound at the threshold of pain, 120 dB?
m
I need expert help to solve the above question.
Two blocks are connected by a very light string passing over a massless and frictionless pulley (Fig. E6.7). Traveling at constant speed, the 20.0-N block moves 75.0 cm to the right and the 12.0-N block moves 75.0 CIJl downward.
A 200g ball on a 60 {cm}-long string is swung in a vertical circle about a point 200 {cm} above the floor.
What is an initial and final energy of the system energy? It takes .005 seconds for the bullet to embed itself into the block. What is an average impact force it experience.
A 12kg hammer strikes a nail at a velocity of 8.2m/s and comes to rest in a time interval of 8.0. What is the average force acting on the nail
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find out the magnitude of their acceleration. If the blocks move determine the magnitude of the tension in the string. If the blocks do not move determine the sum of magnitude of the forces of friction acting on the blocks. Show all the work.
Compute the linear momentum and angular momentum of a Frisbee of mass 0.130 kg if it has a linear speed of 1.25 m/s and an angular velocity of 62.5 rad/s
A particle undergoes a displacement Δr of magnitude 57 m in a direction 25° below the x axis. Express Δr in terms of the unit vectors x and y.
Find the acceleration of the aircraft and express it in multiples of g, free fall acceleration.
The pilot of an aircraft wishes to fly due west in a 50.0 kilometer per hour wind blowing toward the south. Find what should its speed be relative to the ground
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