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An accurate clock is kept in a laboratory located on the equator of the Earth, and two identical clocks are placed aboard two aircraft flying at 250 m/s (ground speed) in the eastward and westward directions around the equator. Taking into account the rotation of the earth, calculate the difference that accumulates between the laboratory clock and each of the two flying clocks upon one trip around the Earth. (Hint: Consider the three clocks from the point of view of an inertial reference frame centered on the Earth, but not rotating with it.)
A 68-kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.11. What would be the magnitude of acceleration.
How far below the release point is the center of mass of two stones at t = 550 ms? (Neither stone has yet reached the ground.)
Illustrate what is the average emf that is induced in this coil if it is in a region where B=2.0 T upward, and the coil's plane is perpendicular to B?
Assuming that the acceleration is uniform when the racquet is applied over a distance of 0.52 m, illustrate what is the magnitude of the force exerted on the ball by the racquet?
What is the instantaneous power, at a time of 0.00700 seconds, dissipated by a 200 ohm resistor in a resonant AC circuit powered by a generator with a 21.0 V greatest potential difference operating at 5000 rad/s .
A 12.00kg runaway grocery cart runs into a spring with spring constant 260-N/m and compresses it by 65 cm. What was the speed of the cart just before it hit spring.
A worker on scaffolding 65 ft above the ground needs to lift a 340 lb bucket of cement from ground to a point 30 feet above the ground by pulling on a rope weighing 5 lb/ft. How much work is required.
for a horizontal block spring system, the maximum displacement is 15cm. if k = 150N/m, calculate the mass of the block, calculate maximum value of kinetic energy
The driver of an 1800 kg car travelling at 23 m/s slams on the brakes, locking the wheels on the dry pavement. The coefficient of kinetic friction between rubber and dry concrete is typically 0.700.
A force of 78gm acts at the point (2, 3, 5) the direction cosines of its line of action being as 2:2:1 find the magnitude of its moment about the joining the origin to the point (2, 3, 4).
An athlete starts at point A and runs at a constant speed of 7.00 m/s around a round track 250 m in diameter? Find the x component of this runner's average velocity between points A and B.
A block with mass m = 15kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4234N/m after being compressed the distance x1 = 0.536m from the spring's unstretched length. The floor is frictionless except for a roug..
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