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An amplifier supplies 5.0 Watts to a perfectly efficient loudspeaker at one end of a 10.0 cm diamter tube filled with air.
What is the intensity of the sound at the other end of the tube?
What is the intensity 10 m in front of the tube (approximate the wavefront to be a hemisphere moving outward in the direction that the loudspeaker is pointing). If the frequency of the sound is 250 Hz, how far apart are the wavefronts? The speed of sound is 340 m/s.
An object is 32cm in front of a converging lens with a focal length of 6.9cm, Use ray tracing to determine the location of the image
A bullet is moving at a speed of 410 m/s when it embeds into a lump of moist clay. The bullet penetrates for a distance of 0.0721 m. Determine the acceleration of th ebullet while moving into the clay.
A 0.2 kg steel ball is dropped straight down onto a hard, horizontal floor and bounces straight up. FIND the magnitude of the impulse delivered to the floor by the steel ball
Race car teams will spend exorbitant money to gain even the slightest edge on their competition. calculate its percent change in moment of inertia
How far must it now sail to reach its original destination. find the potential energy of the system.
A plank 2.00 cm thick and 15.7 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
A small plastic sphere charged to -10 nC in held 1.0 cm above small glass bead at rest on a table. find the maximum charge can the bead have without leaping up
An elevator is moving upward at 1.07 m/s when it experiences an acceleration 0.30 m/s2 downward, over a distance of 0.71 m. What will its final velocity be
An airplane takes off at sea level and climbs to a height of 475 m. Estimate the net outward force on a passenger's eardrum
Find the energy of the electron in the ground state oftriply ionized beryllium, which has an atomic number Z =4. Find the radius of its ground-state orbit
When two carts having the same mass and the same speed collide and bounce off of each other elastically, what is the final total momentum of the carts
Suppose that a particle accelerator is used to move two beams of particles in opposite directions, what is the magnitude of the average current in this region
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