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A duck has a mass of 2.6 kg. As the duck paddles, a force of 0.11 N acts on it in a direction due east. In addition, the current of the water exerts force of 0.20 N in a direction of 60 degrees south of east. When these forces begin to act, the velocity of the duck is 0.11 m/s in a direction due east. Find the magnitude and direction (relative to due east) of the displacement that the duck undergoes in 2.2 s while the forces are acting.
A sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window that has area of 0.500m2. How much energy does this wave carry through the window
a potters wheel-a thick stone disk of radius 0.500 m and mass 125 kg-is freely rotating at 50.0 revmin. the potter can
What is the electric potential 3.0×10^?11 from a proton (charge +e)? Let V=0 at r=infinity. What is the potential energy of an electron at this point
A 61kg skydiver can be modeled as a rectangular "box" with dimensions 21cm x 37cm x 1.8m. What is his terminal speed if he falls feet first
three balls of equal mass are fired from the same position at a height h above horizontal ground with equal speeds. the
A grindstone with radius 0.65m starts from rest and rotates counter-clockwise through 3 rev at which point its angular speed is 25 rad/s
Standing on the surface of a small spherical moon whose radius is 6.85·104 m, What maximum height above the surface of the moon will the rock reach
A nerve fiber (axon) may be approximate as a long cylinder. what is the resistance of a 0.3-m long fiber
a certain black box contains unknown resistances and sources of emfs connected in an unknown way such that 1 a 10 n
A woman with a mass of 55.0kg is standing on the rim of a large disk that is rotating at an angular velocity of 0.470rev/s, Calculate the magnitude of the total angular momentum of the woman-plus-disk system
An electron and a proton are initially very far apart (effectivelyan infinite distance apart). They are then brought together to forma hydrogen atom, in which the electron orbits the proton at anaverage distance of 5.39*10-11 m.
A sinusoidal voltage ?v = (100 V) sin (200t) is applied to a series RLC circuit with L = 40 mH, C = 120 ?F, and R = 32 ?. What is the maximum current in the circuit
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