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The author's cat enjoys chasing chipmunks in the front yard. In this game, the cat sits at one edge of a yard that is w = 29 m across (see figure), watching as chipmunks move toward the center. The cat can run faster than a chipmunk, and when a chipmunk moves more than a certain distance L from the far end of the yard, the cat knows that it can catch the chipmunk before the chipmunk disappears into the nearby woods. If the cat's top speed is 7.0 m/s and a chipmunk's top speed is 4.2 m/s, find L. Assume the chipmunk and cat move along the same straight-line path.
A luminous disk of diameter 2 cm is places 0.8m to the left of a flat screen. A converging lens is places among the disk and the screen at a location 20cm from the disk and a real image is formed on the screen.
A block weighing 77.5 N rests on a plane inclined at 25.0° to the horizontal. A force F is applied to the object at 35.0° to the horizontal, pushing it upward on the plane. Coefficients of static and kinetic friction between the plane and the block a..
A soccer player is at a park and kicks a ball with an initial speed of 18.00 m/s at an angle of 40 degrees above the horizontal. There is a 5m high wall 16m away from the child and in the direction of the kick. There is negligible air resistance. (us..
Two masses of 4.00 kg each, connected by a string, slide down a ramp making an angle of 45° with the horizontal. The coefficient of kinetic friction between m1 and the ramp is 0.33. The coefficient of kinetic friction between m2 and the ramp is 0...
An object is formed by attaching a uniform, thin rod with a mass of mr = 6.55 kilogram and length L = 5.16 meter to a uniform sphere with mass ms = 32.75 kilogram and radius R = 1.29 meter. Compute the moment of inertia of the object about an axis ..
calculate the terminal velocity of a 1.0 cm bug. assume that the density of the bug is 1.0 gcm3.and the bug is
for uniform circular motion describe how the speed velocity and acceleration change with time. for each vector quantity
A diffraction grating with 610 lines per mm is illuminated with light of wavelength 520 nm. A very wide viewing screen is 2.1 m behind the grating. How many bright fringes can be seen on the screen
A child water pistol shoots water through a 1.0 millimeter-diameter hole. Determine the volume flow rate during the squirt
Dr. Bradshaw builds a slide. By lifting one side, he finds that when the slide makes an angle of 32 degrees with the horizontal, Jackson begins to slide. What is Jackson's acceleration
A gurney is pushed across a level rug when the attendant lets go and the gurney rolls to a stop with an acceleration 1.4 m/s/s. find the mass of the gurney
A plane is headed due west with an air speed of 224 m/s. Find the velocity of the plane relative to the earth
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