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The image of an object seen in a mirror is twice its actual size. The orientation of the image is the same as that of the object. If the object distance do is 1.7 m, what is the focal length of the mirror?
What is the wavelength of radio waves. An electron in a TV is accelerated toward the screen across a potential difference of 54.2kV. How much kinetic energy does the electron gain while accelerating.
If the angle between wires supporting the street lamp is reduced to 110°, what is the tension in each wire.
A laser beam of unknown wavelength shines through the two slits and produces a diffraction pattern with dark bands at y1 = 8.9mm, what is the wavelength of the laser light used
If one arm of a Michelson interferometer contains a tube 2.5 cm long that is ?rst evacuated and then slowly FIlled with air (n=1.0003)
The magnetic field has been measured to be horizontal everywhere along a rectangular path x = 22 cm long and y = 5 cm high. Along the bottom the average magnetic field B1 = 1.3 10-4 tesla, along the sides an average magnetic field B2 = 1.0 10-4 te..
A meter stick lies on the bottom of a 100 cm long tank with its zero mark against the left edge. You look into the tank at a 30 angle, with your line of sight just grazing the upper left edge of the tank.
A 15.0{rm cm}-diameter non-conducting sphere carries a total charge of 2.25 mu {rm C}, distributed uniformly throughout its volume. Graph the electric field E as a function of the distance r from the center of sphere from r = 0 to r = 30.0{rm{ cm}..
A 2.9 kg block is released from rest on a 45° inclined ramp. The block will lose energy to friction at a constant rate of 4 J/m as it slides down the ramp
Take the mass of the sun to be m_s = 1.99×1030 {rm kg}, gravitational constant to be G = 6.67×10-11 {rm N} cdot {rm m^2/kg^2}, and an acceleration due to gravity at the earth's surface to be g = 9.810 {rm m/s^2}.
The wheels of a wagon can be approximated as the combination of a thin outer hoop, of radius rh = 0.580 m and mass 4.89 kg, what should the radius of the disk be
A golfer hits a shot to a green that is elevated 3.20 m above the point where the ball is struck. find the speed of the ball just before it lands.
A string is stretched between fixed supports separated by 86.5 m. It is observed to have resonant frequencies of 359.000 and 430.800 Hz, What is the wave speed for this string
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