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If the speed of the crate at A is 15 ft/s which is increasing at a rate v=3 ft/s^2, determine the magnitude of the acceleration of the crate at this instant. [crate is on an incline sliding back toward the orgin at a distance of 10ft - no specific height is given. Also on the diagram it has: y=(1/16)*x^2 for the ramp].
A 120 kg scaffold is 6.6 meters long. It is hanging with two wires, one from each end. A 540 kg box sits 1 meter from the left end. What is the tension in the right hand side wire?
A piece of plastic has a net charge of +2.00 uC. How many moreprotons than electrons does this piece of plastic have?
Two adjacent resonant frequencies of an organ pipe are found to be 500 Hz and 600 Hz. What is the length of the pipe
A bubble with a volume of 1.0 cm 3 forms at the bottom of a lake that is 20.0 m deep. The temperature at the bottom of the lake is 10.0 °C. The bubble rises to the surface where the temperature is 25.0 °C. Suppose that the bubble is small sufficient..
A curving freeway exit has a radius of 50.5 and a posted speed limit of 35. What is your radial acceleration (in ) if you take this exit at the posted speed
Katie and Emily are riding on a circular merry-go-round that has a radius of 5m. Katie is on a horse that is 2.5m from the center of merry-go-round and Emily is on a tiger that is 4.5 m from the center of the merry-go-round. What is Katie's tangen..
A hydraulic chamber with a spring (spring constant = 1600 N/m) attached to the input piston and a rock of mass 40kg resting on the output plunger.
A 6 m board of mass 5 kg is hinged at one end, with a 60 kg block nesting on the board 202 cm from the hinge. Find the force exerted by the hinge at this angle
suppose that protons are fired towards the large flat side of a charged conducting plate. initial speed of the protons
The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 5.45 m/s2. If the car's initial speed is 33 m/s, how long does it takes to stop and how far does it travel, starting ..
High-voltage power lines are a familiar sight throughout the country. What is the resistance of ten kilometers of this wire
A house painter uses the chair and pulley arrangement of the figure to lift himself up the side of a house. With what force must he pull down on the rope
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