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A vertical solid-steel post 26.0 cm in diameter and 2.53 m long is required to support a load of 8200 kg. You may ignore the weight of the post. What is the strain in the post and the change in the posts' length when the load is applied?
A 25 N force at 60° is required to set a crate into motion on a floor. What is the value of the static friction
Two children, Mary and Kate, are riding on a merry-go-round. Mary is at a greater distance from the axis of rotation than Kate. Which child has the larger angular speed? Tangential speed? Centripetal acceleration?
q1. a stone of mass 0.31 kg is tied to a string of length 0.85 m and is swung in the horizontal circle with speed v.
a mass of 10 kg was hung vertically from a spring. the system obtain equilibrium with a stretched length of 30 cm.a
A 20cm length of 0.35mm diameter nichrome wire is welded into a circular loop. The loop is placed between the poles of an electromagnet, What is the induced current in the loop
a microwave oven generates a sound level of 37.3 db when consuming 1.6 kw of power. estimate the fraction of this power
An electron moves in the positive x-direction a distance of 2.31 m in 2.85·10-8 s, bounces off a moving proton, What is the average speed of the electron
Two thin-walled concentric conducting spheres of radii 5.0 cm and 10 cm have a potential difference of 100 V between them
The treasure map in the figure gives the following directions to the buried treasure, Which direction should you go to reach the treasure and How far should you go to reach the treasure
One cylinder in the diesel engine of a truck has an initial volume of 600 cm3. Air is admitted to the cylinder at 30 0C and a pressure of 1.0 atm. The piston rod then does 400 J of work to rapidly compress the air. What are its final temperature and ..
A beam of light is sent directly down onto a glass plate (n = 1.5) and a plastic plate (n = 1.2) that form a thin wedge of air (see the drawing). An observer looking down through the glass plate sees the fringe pattern shown in the lower part of the ..
a planet has two small satellites in circular orbits around the planet. the first satellite has a period 12 hours and an orbital radius 6*10^7m. what is the orbital radius of the second satellite
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