Suppose the straight-line distance between New York and San Francisco is 4.1 × 106 m (neglecting...
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Suppose the straight-line distance between New York and SanFrancisco is 4.1 × 106 m (neglecting the curvature of the earth). AUFO is flying between these two cities at a speed of 0.68c relativeto the earth. What do the voyagers aboard the UFO measure for thisdistance?
The total energy of an object is 7.86 × 1012 J, andits kinetic energy is 6.00 × 1012 J. What is the massm of the object?
A radar antenna is rotating and makes one revolution every 25 s,as measured on earth. However, instruments on a spaceship movingwith respect to the earth at a speed v measure that theantenna makes one revolution every 45 s. What is the ratiov/c of the speed v to the speedc of light in a vacuum?
As observed on earth, a certain type of bacteria is known todouble in number every 24 hours. Two cultures of these bacteria areprepared, each consisting initially of one bacterium. One cultureis left on earth and the other placed on a rocket that travels at aspeed of 0.932c relative to the earth. At a time when theearthbound culture has grown to 16 bacteria, how many bacteria arein the culture on the rocket, according to an earth-basedobserver?
Suppose the straight-line distance between New York and SanFrancisco is 4.1 × 106 m (neglecting the curvature of the earth). AUFO is flying between these two cities at a speed of 0.68c relativeto the earth. What do the voyagers aboard the UFO measure for thisdistance?
The total energy of an object is 7.86 × 1012 J, andits kinetic energy is 6.00 × 1012 J. What is the massm of the object?
A radar antenna is rotating and makes one revolution every 25 s,as measured on earth. However, instruments on a spaceship movingwith respect to the earth at a speed v measure that theantenna makes one revolution every 45 s. What is the ratiov/c of the speed v to the speedc of light in a vacuum?
As observed on earth, a certain type of bacteria is known todouble in number every 24 hours. Two cultures of these bacteria areprepared, each consisting initially of one bacterium. One cultureis left on earth and the other placed on a rocket that travels at aspeed of 0.932c relative to the earth. At a time when theearthbound culture has grown to 16 bacteria, how many bacteria arein the culture on the rocket, according to an earth-basedobserver?
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You can see the logs in the Dashboard.