A trebuchet wasa hurling machine builtto attackthe walls of a castle under siege. A large stone could be hurled against a wall to break apart the wall. The machine was not placed near the wall because then arrows could reach itfrom the castle wall. Instead, itwas positioned so that the stone hit the wall during the second half of its flight. Suppose a stone is launched with a speed ofv0= 28.0 mls and at an angle ofθ0= 40.0°. What is the speed of the stoneif it hits the wall (a) just as it reaches the top of its parabolic path (b) when it has descended to half that height? (c) As a percentage, how much faster is it moving in part (b) than in part (a)?
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Physics, 21.06.2019 18:30
What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.
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Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e
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Physics, 21.06.2019 22:00
Why do electron microscopes have higher resolving power than light microscopes?
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You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?
Answers: 2
A trebuchet wasa hurling machine builtto attackthe walls of a castle under siege. A large stone coul...
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