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1. Jane waits on a railroad platform while two trains approach from the same direction at equal speeds of 11.90 m/s. Both trains are blowing their whistles (which have the same frequency), and one train is some distance behind the other. After the first train passes Jane but before the second train passes her, she hears beats of frequency 6.50 Hz. What is the frequency of the train whistles?
2. Two point sources are in phase and emit a 406 Hz tone. What is the phase difference at a point that is 2.0 m from one source and 9.0 m from the other? (Take the air temperature to be 20°C.) in rad?
In a steering wheel assembly, a Hooke's universal joint connects two shafts which are inclined at to each other. If the driving shaft speed is 500 rev/min, determine the maximum and minimum speeds of the driven shaft
A system consists of 4.0 kg of water at 85 degrees Celsius 35 J of work is done on the system by stirring with a paddle wheel, What is the change in internal energy of the system
A series RLC circuit is shown in the figure. The circuit is powered by an AC source. The peak emf of the AC source is 110 volt, What is the resonant frequency of this RLC circuit (in the unit of Hertz
-What is the total force on the bottom of a swimming pool 13.0 m with 5.8 m whose uniform depth is 1.9 m? What is the absolute pressure on the bottom of a swimming pool? What will be the pressure against the side of the pool near the bottom?
It takes four hydrogen nuclei to create one helium nucleus in the proton-proton chain, How much mass is converted into energy to create four helium nuclei
Protons are accelerated around a ring two km in radius to speeds that approach that of light. The energy for this is stored in capacitors the size of a house. When these capacitors are being charged, they make a very loud creaking sound. What's the o..
A combination of 0.250 kg of water at 20.0°C, 0.400 kg of aluminum at 26.0°C, and 0.100 kg of copper at 100°C is mixed in an insulated container and allowed to come to thermal equilibrium. Ignore any energy transfer to or from the container and de..
Suppose a proton and an alpha particle each have kinetic energy 8.6MeV. Find speed of the alpha particle
If 283 K wastewater, initially containing a dissolved oxygen level of 5×10-3 mmol/L and filling the basin to a depth of 4.55 m, is aerated for 9000 s, evaluate the final dissolved oxygen level.
A 38-kg boy running at 3.7m/s jumps tangentially onto a small circular merry-go-round of radius 2.0 m and rotational inertia 20 kg m2 pivoting on a frictionless bearing on its central shaft. Merry-go-round initially rotating at 0.70 rad/s opposite th..
a rigid container holds 0.20 of hydrogen gas. how much heat is needed to change the temperature of the gas from 50 k to
Consider a cylindrical segment of a blood vessel 3.50cm long and 2.40mm in diameter. What additional outward force would such a vessel need to withstand in the person's feet compared to a similar vessel in her head?
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