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Problem: Determine the angle such that an equal force is developed in legs OB and OC. What is the force in each leg if the force is directed along the axis of each leg? The force F lies in the plane. The supports at A, B, C can exert forces in either direction along the attached legs.
estimate the electrical energy stored in the atmosphere if the earths electric field extends upward for 1700 m. and
An object of mass m moves to the right with a speed v. It collides head-on with an object of mass 3m moving with speed v/3 in the opposite direction. what is the speed of the combined object
an ice puck of mass m revolves on an icy surface in a circle at speed v at the end of a horizontal string of length L. write the equation for centripital force
A spaceship of proper length 306 m takes 0.70 µs to pass an Earth observer. find the speed of this spaceship as measured by the Earth observer.
A 35.0 cm violin string with linear density 0.66 g/m is placed near a loudspeaker that is fed by an audio-oscillator of variable frequency. What is the tension (in newtons) in the string
A 95 g ice cube at 0°C is heated until 85 g has become water at 100°C, How much energy was added to accomplish the transformation
Sound is passing perpendicularly through an open window whose dimensions are 1.1 m x 0.75 m. How much sound energy comes through the window
A spacecraft with circular (north and south sides) of diameter 325.0 m passes Earth moving eastward (in relation to you), What are the dimensions of the circular faces according to the earthbound observer
A skater of mass 82.0 kg initially movesin a straight line at a speed of 5.40 m/s.The skater approaches a child of mass 39.5kg, whom he lifts on his shoulders. Assuming there are no externalhorizontal forces, what is the skater's final velocity?
Suppose the force acting on a tennis ball (mass 0.040 kg) points in the +x direction and is given by the graph of Fig. 7-30 as a function of time. a) Use a graphical method to estimate the total impulse given the ball.
An Olympic diver performs a dive from the 10m platform and achieves a speed of 14 m/s just before entering the water. Neglecting air friction, approximately how many times larger is the diver’s speed than the diver would have achieved by performin..
The launching speed of a certain projectile is five times the speed it has at its maximum height. Calculate the elevation angle at lauching
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