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Meteor Crater in Arizona is thought to have been formed by the impact of a meteor with the Earth some 20,000 years ago. The mass of the meteor is estimated at 5 x 1010 kilogram. Its speed is estimated at 7200 m/s. Find what speed would such a meteor give Earth in a head-on collision?
m/s
The headlights on a certain car are measured to be 1 m apart. The diameter of the pupil in a human eye is2.5 mm. What is the furthest distance
A uniform 20.0 kg chain 2.00 m long supports a 55.0 kg chandelier in a large public building. Find the tension in the bottom link of the chain
A box is pushed across the floor, slide with a constant velocity, and is opposed by a friction force of 25N. What is the magnitude of the force? Choose the correct answer. A.Less than 25N B.Zero C.Greater than 25N D.25n
A merry-go-round at a playground is a circular platform that is mounted parallel to the ground and can rotate about an axis that is perpendicular to the platform at its center. What is the tangential speed of another child
The membrane of the axon of a nerve cell is a thin cylindrical shell of radius r = 10-5 m, length L = 0.09 m, and thickness d = 10-8 m. The membrane has a positive chargeon one side and a negative charge on the other, and acts as aparallel-plate cap..
One runner ran the 100-m dash in 11.9 s. Another runner came in secona at 12.4 s. determine the sepaaration between the two runners
find the input force for a hydraulic system which has a .5 inch diameter input cylinder and a 1.75 inch diameter output
Find the maximum usable magnification for the 200 inch Hale telescope of the Mt. Palomar observatory
A circular loop of wire has an area of 0.3 m2. It is tilted by 45° with respect to a uniform 0.40 T magnetic field. What is the magnetic flux through the loop
A proton accelerates from rest in a uniform electric field of 630 N/C. At some later time, its speed is 1.04 106 m/s. Find the magnitude of the acceleration of the proton
A playground carousel is rotating counterclockwise about its center on frictionless bearings. Find the final angular speed of the carousel
A gasoline engine takes in 1.61X10^4 J of heat and delivers 3700 J of work per cycle. The heat is obtained with burning gasoline with a heat of combustion of 4.60X10^4 J/g. a) What is the thermal efficiency?
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