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Two trains, each having a speed of s, are headed at each other on the same straight track. A bird that can fly at speed 2sflies off the front of one train when they are d apart and heads directly for the other train. On reaching the other train it flies directly back to the first train, and so forth. (We have no idea why a bird would behave in this way.) In terms of variables given in the problem, what is the total distance the bird travels?
What was the bullet's speed as it left the barrel. A 1kg block rests against one end of a horizontal spring which is compressed by 10 $cm$.
A parallel plate capacitor has plates of area 2.0*10^3 and plate separation 1.0*10^4m. find the capacitance of this system if air fills the volume between the plates.
if you throw a ball upward with an initial speed of 4m/s at 1.5 above the ground, find the final velocity just before touching the ground
A football is punted with an initial velocity of 28.7 m/s and an initial angle of 54.1o. What is its hang time
The technique known as potassium-argon dating is used to date old lava flows and thus any fossilized skeletons found in them, What is the age of a piece of solidified lava with a 40Ar/40K ratio of 0.34
A black wood stove with surface area 4.6 m^2 is made from cast iron 4.0 mm thick. What is the rate of heat loss by radiation from the stove
Determine the magnitude of the force between two point charges, Q1 = -2e located at (-3.60 cm, +4.10 cm) and Q2 = -8e located at (-0.60 cm, -8.60 cm).
In the August 1992 space shuttle fight, only 250 m of the conducting tether could be let out. What was the angle between the shuttle's velocity and the Earth's field, assuming the conductor was perpendicular to the field
A 1.85m diameter wagon wheel makes one revolution in 3.45s. What is the tangential speed of a point in it's rim
In July 2005, NASA's "Deep Impact" mission crashed a 372-kg probe directly onto the surface of the comet Tempel 1, hitting the surface at 37000 km/h. What change in the comet's velocity did this collision produce
A plate carries a charge of -2.0 microcoulombs while a rod carries a charge of 2.5 microcoulombs. How many electrons should be transferred from the plate to the rod, so that both objects have the equal charge.
A car starts from rest and travels for 5.0 s with a uniform acceleration of +1.8 m/s2. How fast is the car going at the end of the braking period
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