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A circular rod of length 25cm and diameter 8mm is made of 1045grade steel. (a) calculate the stress and strain in the rod, andits extension, when it is subjected to 5kN of tension. (b) Atwhat force would the rod begin to yield? (c) by what amount wouldthe rod have to be stretched beyond its original length in order toyield?
The speed of a longitudinal wave in a mixture of helium and neon at 300k was found to be 758m/s. what is the composition of the mixture
A wire loop bent into the shape of a square with 1.5 m sides is centered on the origin of the xy-plane. what current is present in the square wire
A 1200-turn coil of wire that is 2.1 cm in diameter is in a magnetic field that drops from 0.14 T to 0 T in 12 ms. What is the emf of the coil
A man pushes a 37 kg lawn mower using a handle inclined 30.0 degrees from the horizontal. He pushes with 80 N directed along the handle. What's the normal force on the mower
A double slit is opposite the center of a 1.7-m wide screen 2.3 m from the slits. The slit separation is 24 µm and the width of each slit is 7.2 µm. How many fringes are visible on the screen if the slit is illuminated by 590-nm light?
The length of a beam increases by 1.46mm when its temperature is raised from 44.92oC to 90.5 oC. What is the length of the beam at the initial temperature? The thermal expansion coefficient of the material is 0.000053 /oC.
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.947 rad/s. Calculate the total angular momentum of the system
A concave mirror has a focal length of 20 cm. A paraxial beam of light coming from a distant object forms its image at the focal point. compute where is the final image
A uniform rod of mass 1.5kg and Length=0.18m rotates clockwise on the plane of your paper at an initial rate of 40rev/s about its central axis. Determine the initial angular momentum of the rod
A person pulls a toboggan for a distance of 50.0 m along the snow with a rope directed 25.0° above the snow. The tension in the rope is 78.0 N. How much work is done on the toboggan by the tension force
A 144-g cricket ball moving 28.0 m/s strikes a stationary 5.25-kg brick resting on small rollers so it moves without significant friction. What is the cricket ball's speed after the collision
it takes 60 joules of work to move 2 coloumbs of charge from point A to point B. what is the potential difference between point A and point B
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