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An ambulance traveling at 38 m/s approaches a car heading in the similar direction at a speed of 27 m/s. The ambulance driver has a siren sounding at 560 hertz. Find at what frequency does the driver of the car hear the siren? (Suppose a temperature of 20° C.)
write a nuclear reaction for the neutron-induced fission of u-235 to produce te-137 and zr-87? how many neutrons are
The power of lightbulb is 100 Watts. I found the intensity of lightbulb which is about 812 Watt/m^2. Using these information, find the intensity of the Sun
A thin uniform rod (length = 1.1 m, mass = 4.2 kg) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is 1/3 mL2. The rod is released when it is 55° below the horizontal. What is..
the current increases from 10 ma to 45 ma in a 90 mh inductor over 10 s. what is the induced emf across the
You're the operator of a 1.20×104 V rms, 60 Hz electrical substation. When you get to work one day, What is the rms current leaving the station
Three identical stars of mass M = 1.9 x1030 kg form an equilateral triangle that rotates aroundthe triangle's center as the stars move in a common circle aboutthat center. The triangle has edge length L = 7.1 x1010 m. What is the speed of the star..
A 3.0 kg mass collides and sticks to a 5.0 kg mass connected tothe end of a string. what is the initial speed of the two mass system
The penny-farthing is a bicycle that was popular between 1870 and 1890. As the figure shows, this type of bicycle has a large front wheel and a small rear wheel. On a Sunday ride in the park the front wheel (radius = 1.05 m) makes 444 revolutions. Ho..
a brother and sister are playing in the woods when suddenly the brother realizes that they are separated. the last
A cubical box of widths Lx = Ly = Lz = L = 4.82 nm contains eight electrons. What is the energy of the ground state of this system? Assume that the electrons do not interact with one another, and do not neglect spin.
If Neville weighs 25 N and climbs a mountain and exerts 500 J of work, how far did Neville climb
A charge of +q is located at the origin, while an identical charge is located on the x axis at x = 0.49 m. Where should the third charge be located
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