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A 10 kg door that is 1.0m wide and 2.5m tall is supported by two hinges,each of which is 10 cm from the top(or bottom)of the door. If each hing supports half the weight of the door, what is the force on each hinge? Remember,force is a vector?
Electrons accelerated by a potential difference of 13.22 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength. Calculate the wavelength of light emitted with the..
Carbon-14 has an activity of 0.25 Bq per gram of carbon for living organisms. The half-life of Carbon-14 is 5730 years. how old is the material
A straight conductor carrying a current of 19 A splits into identical semicircular arcs of radius 13.3 m. The positive direction is out of the screen. What is the magnetic field at the center of the resulting circular configuration?
Soft drinks are commonly sold in aluminium containers. How a lot of such containers are thrown away or recycled each year by U.S. consumers.
Determine the phase and group velocities for a monatomic lattice. Plot the velocities versus the wave vector k and give a brief discussion of their significance.
From the shape of total energy vs. time plot, what can you conclude about the conservation of mechanical energy in your mass and spring system.
Consider a small raindrop and a large raindrop falling through the atmosphere. What are their accelerations when they reach terminal speed
The temperature at Furnace Creek in Death Valley reached 134°F on July 10, 1913. What is the speed of sound in air
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. What stopping potential would be observed when using light from a red lamp
Expand Lagrangian to second order about equilibrium coordinates, r_0, phi = wt and find the condition for stability against small oscillations.
a 0.25 harmonic oscillator has a total oscillation energy of 9.9 j. if the oscillation amplitude is 20.0 cm what is the
The two blocks are on frictionless inclines and are in static equilibrium. The block on the left has a mass of 49 Kg, and the block on the right has a mass of n3 Kg. If the left incline has the length of n1 meters, and the right incline the length of..
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