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The focal length of diverging lens is negative. if f=-20cm for a particular diverging lens, where well the image be formed of an object locate 50cm to the left of the lens on the optical axis? What is the magnification of the image?
Light of wavelength 630 nm passes through a grating and then onto a screen located several meters from the grating. Determine the wavelength of the second source
An ice skater is rotating at 3.4rev/seconds while her arms are beside her. The moment of inertia of the skater is 5kg x m^2. what is her new angular velocity
If you tied the string from the previous problem to a wooden block, What is the minimum volume of wooden block you could use? The density of wood is 600 kg/m3
An atom in a metastable state has a lifetime of 6.20 ms. What is the uncertainty in energy of the metastable state
A 11 kg satellite has a circular orbit with a period of 3.3 h and a radius of 3.6 × 106 m around a planet of unknown mass. what is the radius of the planet
A HeNe (Helium-Neon) laser has a beam power of 5.00 mW at a wavelength of 656 nm. Assume the beam is focused by a lens to a circular spot whose effective diameter is 15 wavelengths of the light.
A disk, initially rotating at 106 rad/s, is slowed down with a constant angular acceleration of magnitude 2.24 rad/s2. How much time does the disk take to stop
A toy of mass 0.155 kg is undergoing simple harmonic motion (SHM) on the end of a horizontal spring with force constant 305 N/m. What is the maximum speed attained by the object during its motion?
A string on a violin is stretched between two points 20.0 cm apart with a tension of 120 N. The total length of the string is 31 cm and it has a mass of 0.62 grams. The frequency of the third harmonic is?
A river of width L moves uniformly with speed v.A canoe is to be paddled at a constant speed c with respect to the river. what is the round trip time
Two metal spheres of different sizes are charged such that the electric potential is the same at the surface of each. Sphere A has a radius 7 times that of sphere B. Let and be the charges on the two spheres, and let and be the electric-field magnitu..
A solid wire 2.1mm in diameter carries a 10.0 A current with uniform curent density. Use Ampere's Law to determine the magnetic field strength
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