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A flatbed truck is carrying a 20-kg crate up a sloping road. The coefficient of static friction between the crate and the bed is 0.69, and the coefficient of kinetic friction is 0.30. What is the maximum angle of slope that the truck can climb at constant speed if the crate is to stay in place? Give your answer in degrees, and only enter the number.
this is the interference pattern on a viewing screen behind two slits. how would the pattern change if the two slits
Insurance companies need to invest large amounts of money in opportunities that provide high yields and are long-term. One type of investment that has recently attracted some insurance companies is real estate.
A 2000kg truck traveling at a speed of 6m/s makes a 90 degree turn in a time of 4s and emerges from this turn with a speed of 4m/s. What is the magnitude of the average resultant force on the truck during this turn
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?
Describe the energy changes that occur when an electron associated with one orbital goes to a different, higher energy orbital.
A fighter plane flying at constant speed 510 m/s and constant altitude 7400 m makes a turn of curvature radius 5300 m. What is his/her apparent weight during the plane's turn
A mass-spring system oscillates on a horizontal frictionless surface with an amplitude of 3.56 cm. If the spring constant is 237 N/m and the mass is 0.400 kg; Determine the mechanical energy of the system
A 4.00 kg block slides down a frictionless inclined plane with an acceleration 3.00m/s2. What is the angle of the incline above horizontal
A force of 7.5N stretches a certain spring by 5cm. How much work is done in streching this spring by 8.0cm?
A 1.0-kg mass is attached to a string wrapped around a shaft of negligible mass and having a 8.0-cm radius. A dumbbell-shaped "flywheel" made from two 0.500-kg masses is attached to one end of the shaft and perpendicular to its axis. The mass is rele..
Two identical gliders on an air track are held together by a piece of string, compressing a spring between the gliders. What velocity does the other glider have
You are watching an archery tournament when you start wondering how fast an arrow is shot from the bow. What was the landing speed of the arrow
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