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A 26.2-kg dog is running northward at 3.05m/s, while a 5.30-kg cat is running eastward at 3.53 m/s. Their 69.3-kg ownerhas the same momentum as the two pets taken together. Find the direction and magnitude of the owner's velocity.
A wire that is carrying a current is placed in a uniform magnetic field pointing out of the page. What direction does the force on the wire point
A 21.5 g bullet strikes a 0.650 kg block attached to a fixed horizontal spring whose spring stiffness constant is 7.30 x 10^3 N/m and sets it into vibration with an amplitude of 21.5 cm. What was the speed of bullet before impact if the bullet and bl..
Assume a typical hummingbird has a lifespan of 4.00 years and an average heart rate of 1300 beats per minute. Compute the number of times a hummingbird's heart beats in its life, and express it in scientific notation. Make use of 365.24 days per y..
One force is 60.0 N along the x-axis, the second is 75.0 N along a direction making a counterclockwise angle of 150.0° with the x-axis. Illustrate what is the magnitude of the third force?
Tarzan has foolishly gotten himself into another scrape with the animals and must be rescued once again by Jane. What is Jane's (and the vine's) angular speed
Two railroad freight cars with masses 130 (Mg) and 170 (Mg) approach with equal speeds of 0.330 (m/s). What fraction of the original kinetic energy was lost in this inelastic collision
A 58.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.700 and 0.480, respectively. What horizontal pushing force is required to just start the crate moving
A sample of an unknown material appears to weigh 290 N in air and 155 N when immersed in alcohol of specific gravity 0.700. What is the volume of the material
a horizontal rifle is fired at a bulls-eye. the muzzle speed of the bullet is 700 ms. the gun is pointed directly at
A 3.0 kg mass is supported by a steel wire of diameter 0.60 mm and length 1.4 m. How much will the wire stretch under this load
you swing a 3.16-kg bucket of water in a vertical circle of radius 0.860 m. at the top of the circle the speed of the
The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.10 . At this new distance, the speed of the block is observed to be 3.50. Explain by how much work was done by the person who pulled on the cor..
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