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A tuning fork with frequency 540 Hz is dropped from a building of height 125 m with a musician. The musician can hear the fork sounding as it falls. What frequency does the musician hear right after three seconds?
Someone steps on your toe, exerting a force of 300 N on an area of 1.1 cm2. What is the average pressure on that area in atm
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 52.0 cm . The explorer finds that the pendulum completes 108 full swing cycles in a time of 145s .What is the magnitude of the gravitational acceleration o..
The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 21 to 59 dB. What is the ratio of the final sound intensity to the original sound intensity?
A student sucks on the end of a long tube which is initially filled with air and whose other end is in a large bucket of water which is open to the atmosphere. They manage to draw the water up a vertical distance of 5.09 m
a constant force is applied to an object that causes a certain displacement. if the angle between the force and the displacement is 135 degrees, the work done by the force is
a. doubling both charges changes the potential energy for a pair of a pint charges by a factor of?b. tripling the
1 what are interference and diffraction? under what circumstances do they occur?2 light from a helium-neon laser is
the temperature at a point 31 miles north of a station is 5.5 f cooler than at the station. if the wind is blowing from
A 12 kg mass is connected to a spring of constant 75 N/cm and thesystem is sent into simple harmonic oscillation. what is the period of the resulting oscillation
A particle is acted on by two torques about the origin: ?1 has a magnitude of 4.5 N·m and is directed in the positive direction of the x axis, and ?2 has a magnitude of 3.2 N·m and is directed in the negative direction of the y axis. What are the mag..
During a panic stop, a car decelerates at 7.00 m/s^2. What distance does the car travel in this time
Sound enters the ear, travels through the auditory canal, and reaches the eardrum. The auditory canal is approximately a tube open at only one end. The other end is closed by the eardrum. A typical length for the auditory canal in an adult is abou..
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