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You are riding in a boat whose speed relative to the water is 4.9 meter per second. The boat points at an angle of 26.5 degree upstream on a river flowing at 15.5 meter per second. Determine the time it takes for the boat to reach the opposite shore if the river is 26 meter wide.
when viewing an object with a magnifying glass whose focal length is 10 cm, What is the observed magnification
A commuter train blows its horn as it passes a passengerplatform at a constant speed of 40.0m/s. What is the frequency observed by a person on the platform as the train approaches
A resistor is made of a material that has a resistivity that is proportional to the current going through it. If ithe voltage across the resistor is doubled, what happens to the power dissipatted by it?
Makeshift child's swing: Child's weight, magnitude of force, maximum angle, A makeshift swing is constructed by making a loop in one end of a rope and tying the other end to a tree limb.
the top of a tower much like the leaning bell tower at pisa italy moves toward the south at an average rate of 1.5 mmy.
a ball is thrown horizontally from a high cliff with a velocity of 5 ms. ignoring the slowing of the ball due to air
A man holds a double-sided spherical mirror so that he is looking directly into its convex surface, 35 cm from his face. The magnification of the image of his face is +0.13. What will be the image distance when he reverses the mirror (looking into..
A steel beam is placed vertically in the basement of a building to keep the floor above from sagging. Find the vertical compression of the beam
The plates of a spherical capacitor have radii 54.8 mm and 57.3 mm. Calculate the capacitance in picofarads. What must be the plate area in square centimeters of a parallel-plate capacitor with the same plate separation and capacitance?
two coupled boxcars are rolling along at 3.5 ms when they collide with and couple to a third stationary boxcar. a what
at time t0 a 2450 kg rocket in outer space fires an engine that exerts an increasing force on it in the x-direction.
A 18.4 kg cart traveling at 5.63 m/s (this movement defines thepositive direction) has a head on perfectly inelastic collision with a 6.9 kg cart traveling at 7.06 m/s. How much kineticenergy is lost in the collision?
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