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A gardener mows a lawn with an old fashioned push mower. The handle of the mower creates an angle of 39o with the surface of the lawn.If a 214 Newton force is applied along the handle of the 19 kilogram mower, find the normal force exerted by the lawn on the mower?
q1. a student holding two weights close to his chest is sitting on a frictionless chair the student and chair are
On a frictionless table, a glob of clay of mass 0.42 kg strikes a bar of mass 1.98 kg perpendicularly at a point 0.39 m from the center of the bar and sticks to it. At what angular speed does the bar/clay system rotate about its center of mass afte..
If the polar coordinates of the point ( x , y ) are ( r , ? ), determine the polar coordinates for the following points
Some forms of cancer can be treated using proton therapy in which proton beams are accelerated to high energies, then directed tocollide into a tumor, killing the malignant cells. Suppose a protonaccelerator is 7.3 m long andmust accelerate proton..
A large turntable rotates about a fixed vertical axis, making one revolution in 5.00 s. What is the angular speed of the turntable when the child is 2.50 from the center, assuming that you can treat the child as a particle
an air capacitor is made from two flat parallel plates 1.50 mm apart. the magnitude of charge on each plate is 0.0180
A converging lens has a focal length of 71.00 cm. A 12.0-cm-tall object is located 131.0 cm in front of this lens. Is the image real or virtual
In a test explosion, a detonating hydrogen bomb briefly achieves a temperature of 10 million degrees Kelvin
q1. a series r-l-c circuit of r 200 ohms l 0.900 h and c 2.00 uf carries an rms current of 0.250 a with the
To pull a 30 kg crate across a horizontal frictionless floor, a worker applies a force of 190 N, directed 20° above the horizontal. The crate moves 3.0 m. (a) What work is done on the crate by the worker's force? (b) What work is done on the crate by..
A crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. The truck accelerates forward on level ground. What is the maximum acceleration the truck can have so that the crate does not slide relative to the truck's flatbed
at the surface of a freshwater lake the pressure is 106 kpa.a what is the pressure increase in going 34.5 m below the
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