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A hanging magnesium wire with diameter0.13 cm is initially 2.0 m long. When a 28kg mass is hung from it, the wire stretches an amount 1.03 cm. A mole of magnesium has a mass of 24 grams, and its density is 1.74 g/cm3.What is the length of an interatomic bond in magnesium (diameter of one atom)?Find the approximate value of the effective spring stiffness of oneinteratomic bond in magnesium.
you have a telescope that has an objective lens with a diameter of 60.0 mm and has a focal length of 150.0cm. what angular resolution in radians or degrees is achieved
A double-slit experiment is set up using red light (l = 714 nm). A first order bright fringe is seen at a given location on a screen. What wavelength of visible light (between 380 nm and 750 nm) would generate a dark fringe at the identical locati..
The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.939 W/m2. How much total electromagnetic energy falls on the area during 1.0 minute
A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 33.5 dB. What is the intensity delivered to the eardrum
A 11.0 g rifle bullet is fired with a speed of 360 m/s into a ballistic pendulum with mass 10.0 kg, suspended from a cord 70.0 cm long. Compute the vertical height through which the pendulum rises
A string is fixed at both ends and is vibrating at 124 Hz, which is its third harmonic frequency. Determine the length of the string
The vertical component of this force is 128 newtons, as the horizontal component is 145 newtons. Calculate the magnitude of F.
A potter's wheel, a thick stone disk of radius .297 m and mass 109 kg, is freely rotating at 57.5 rev/min. Find the effective coefficient of kinetic friction between the wheel and wet rag
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 20000 V. The speeds of the electrons are quite large.
q1. if the focal length of the concave lens is -7.50 at what distance from the lens must an object be placed so that
A long, thin solenoid has 950 turns per meter and radius 2.30 cm. Whats is the magnitude of the induced electric field at a point 0.530 cm from the axis of the solenoid
A metallic sphere has a charge of +3.9 nC. A negatively charged rod has a charge of -6.0 nC. What are the charges of the sphere and the rod now
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