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A speaker fixed to a moving platform moves to a wall, emitting a steady sound with a frequency of 250Hz. A person on the platform, right next to the speaker
Suppose the roller coaster in Fig. (h1 = 32 m, h2 = 13 m, h3 = 20) passes point A with a speed of 3.00 m/s.
Sound waves travel through an aluminum bar at a speed of 1400 m/s.
Assuming negligible friction, what spring constant would be needed by the spring in a "b-b gun" to fire a 10g pellet to a height of 100m.
A bystander hears a siren vary in frequency from 476 Hz to 404 Hz as a fire truck approaches, passes by, and moves away on a straight street
In your own words, explain the meaning of the following terms:
Two baseballs, each with a mass of 0.122 kg, are separated by a distance of 950 m in outer space.
2.5 moles of a mono-atomic ideal gas undergo a reversible adiabatic expansion from an initial pressure of 320 kPa and initial volume .
Two submarines are underwater and approaching each other head-on. Sub A has a speed of 13 m/s and sub B has a speed of 7 m/s.
A stationary observer hears a frequency of 500Hz while the source is moving directly toward him.
What is the height of the highest tree limb they can reach on their upward swing?
What fraction of the neutron's kinetic energy is transferred to tha carbon atom? (express your answer in percent)
Use work and energy to find the speed of the 2.0 kg block just before it hits the floor if the coefficient of kinetic friction of the 3.0 kg block is 0.15.
This experiment was designed to understand and measure Doppler shift.
The Starship Enterprise approaches a planet at a speed of 0.8 c. The planet is considered at rest. A Klingon fighter ship approaches from the opposite direction
A French submarine and a U.S. submarine move toward each other during maneuvers in motionless water
One end of stationary rope is tied to a support at the end of a vertical mine shaft 800m deep, the other end is fixed at the bottom by means of a 20kg weight.
A sound source and a person are separated by 1000m. The sound source produces a frequency of 400Hz. Given speed of sound in air @ 343 m/s find:
Particles approximately 3.0 X 10-2 cm in diameter are to be scrubbed loose from machine parts in an aqueous ultrasonic cleaning bath.
A metal can containing condensed mushroom soup has mass 220 g, height 11.2 cm and diameter 6.38 cm.
An opera singer in a convertible sings a note at 600 Hz while cruising down the highway at .
By pulling on the rope, one of the astronauts shortens the distance between them to 5.00 m. What is the new angular momentum of the system?
A sonar signal from a "fish finder" in fresh water returns 0.0460 seconds after being transmitted. What is the distance to the fish that reflected the sound?
An 80.0kg man jumps from a height of 2.50m onto a platform mounted on springs. As the springs compress, the platform is pushed down a maximum distance.
Two blocks are free to slide along a frictionless wooden track ABC as shown in Figure (see attachment). A block of mass m1 = 4.95 kg is released from A.