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A car approaches you at a constant speed while sounding its horn. You hear a frequency of 86.0 Hz. After the car goes by, you hear a frequency of 79.0 Hz. What is the frequency of the sound emittted by the horn? (The speed of sound in air is 342 m/s.)
A train pulls away from a station with a constant acceleration of 0.40 m/s2. What is the minimum constant speed at which she can run
If we observe a stars spectrum and find that the peak power occurs at the border between blue and ultraviolet light, what is the surface temperature of the star in Celsius
A particle of charge +13 µC and mass 2.50 10-5 kg is released from rest in a region where there is a constant electric field of +270 N/C. What is the displacement of the particle after a time of 1.30 10-2 s
An object weighs 277 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 221 N. When it is immersed in oil, it weighs 257 N.
An 8cm^3 ice cube is floating in a 10x10x10 cm glass container completely filled with water, How much water is going to spill over when the ice melts
X-ray pulses from Cygnus X-1,a celestial x- ray source, have been recorded during high- altituderocket flights. The signals can be interpreted as originating whena blob of ion- ized matter orbits a black hole with a period of 5.25 ms. If the blob ..
A laser beam whose wavelength is 681 nm falls on a barrier containing a pair of very narrow slits. A screen is located 2.61 m from the slits. find the separation between the centers of the two slits
In the two-slit experiment, the distance between the slits and the screen is 1.10 m and the distance between the slits is 0.100 mm. what is the wavelength of light
A ball and a thin plate are made from different materials and have the same initial temperature. At what temperature will the ball fall through the hole in each arrangement
Engineers have proposed that large flywheels be used for the temporary storage of surplus energy generated by electric power plants. What is the kinetic energy of rotation of this flywheel
What is the current in the circuit when all six lamps and the heater are turned on? If the circuit has a fuse which will melt if the current exceeds 12 A, will fuse melt.
The field has a magnitude of 0.5 T and is oriented in the +z direction. The particle is deflected in the -y direction and traces out of a fragment of a circle of radius 0.1m. what is the charge to mass ratio
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