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Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 24.3° above the horizontal. One child, by a mass of 45.6 kg, is hanging 1.20 m along the branch from the tree trunk. The other child, with a mass of 35.7 kg, is hanging 2.13 m from the tree trunk. What is the magnitude of the net torque exerted on the branch by the children? Suppose that the axis is located where the branch joins the tree trunk and is perpendicular to the plane formed with the branch and the trunk.
A steep cliff west of Lydia's home reflects a 1460-kHz radio signal from a station that is 69.9 km due east of her home. what is the minimum distance of the cliff from her home
A mass M of 1.19 kg is attached to the end of a string whose length is 0.650 m. The mass slides without friction on a horizontal surface as indicated. If the string can withstand a maximum tension of 55.5 N, what is the maximum tangential speed th..
A small block having mass m sits on a uniform disk that has radius R=0.5m. What is the initial angular velocity of the disk
Standing on the ground 2.7 m from the wall of a building, At what speed should you throw the package so it just barely reaches the window
An excited H atom the e- is in 4d. The atom is in an external magnetic field. What are the smallest and largest possible angles
two disks are mounted on low-friction bearings on the same axle and can be brought together so that they couple and
A sample of helium behaves as an ideal gas as energy is addedby heat at constant pressure from 273K to 393 K. what is the mass of helium present
a vertical spring ignore its mass whose spring stiffness constant is 820 nm is attached to a table and is compressed
a analyse a technological device that applies the principles of linear or circular motion. b assess the impact on
From illustrate what height did the student fall? Suppose that the only force acting on him during the collision is that due to the ground.
At what speed do a bicycle and its rider, with a combined mass of 98 kg, have the same momentum as a 1350 kg car traveling at 4 m/s?
A projectile is launched at ground level with an initial speed of 50.0 m/s at an angle of 30.0º above the horizontal. It strikes a target above the ground 3.00 seconds later. What are the x and y distances from where the projectile was launched to..
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