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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 corner construction lot has the shape of a right triangle. If the two sides perpendicular to each other are 38m long and 40.3m long
Assuming the diver has inhaled a negligible amount of air from the tank, what is the temperature of the ocean water.
A 66.0 kg person throws a 0.0410kg snowball forward with a ground speed of 25.0 m/s. A second person, with a mass of 57kg, catches the snowball.
A ship sets out to sail to a point 141km due north. An unexpected storm blows the ship to a point 138 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive an..
A pendulum clock with a brass suspension system m is calibrated so that its period is 1s. at 11*C (degree Celsius). If the temperature increases to 44oC, by how much does period change.
A large population of aloha users manage to create 50 request/sec,including both originals and retransmissions.time is slotted in units 40msec.
A 4.00 kg block is free from rest 2.0m high at the top of a 30 degree frictionless incline. The block makes a head-on elastic collision with another 3.00 kg block initially at rest on a horizontal surface at the bottom of the incline.
What is the magnitude of the external force essential to hold a 2 kg cart motionless at the top of a 2m high incline which is 30 degrees.
Two 53 {rm g} blocks are held 30 {rm cm} above a table. One of them is just touching a 50-long spring. The blocks are released at the same time. The block on the left hits the table at accurately the same instant as the block on the right first comes..
He is sitting on a set of bathroom scales. He notes that scales show four times his normal weight. What is the radius of the loop, in meters.
An athlete starts at point A and runs at a constant speed of 6m/s around a round track 100 m in diameter, what is x component of this runner's average velocity between points A and B.
Explain how much work is used to raise A to height h? What happens to the kinetic energy of B if its speed is doubled?
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