Recent content by Revvi

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    Minimum distance between stars so we see them as two distinct stars

    Yep. (1.22 x 463 E-9)/2.5 = 2.259...E-7 That's my angle q. Then I do q x 10E22 > 2.259 E 16 meters
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    Minimum distance between stars so we see them as two distinct stars

    Homework Statement Using a telescope with circular aperture of diameter 2.5 meters and wavelength 463 nm. The stars are 10E22 meters away from us. What does the distance between them have to be so we view them as two stars? Homework Equations angle = 1.22 x (wavelength/diameter) >...
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    Frequency of sound coming from speakers

    Homework Statement You are L = 3 m away from a pair of speakers playing a pure tone separated by a distance of d = 1 m. If you walk from the center to a distance of y = 0.75 m, you hear the intensity decrease to zero, then increase all the way back to the initial volume. Homework...
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    Power dissipated in circuit when voltage/current out of phase

    Homework Statement In a different RLC circuit the generator provides a voltage V(t) = 120 sin(2π60t) so that the current in the circuit is I(t) = 5 sin(2π60t +Φ). The phase angle Φ is 25° (0.436 radians). What is the maximum power dissipated in this circuit? Homework Equations P = IV...
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    Diverging lens, calculating image location

    Homework Statement Diverging lens with focus of 2 meters. The object is 3.66 meters away from the lens. Find the exact image location. Homework Equations 1/object + 1/image = 1/f The Attempt at a Solution I plugged in the numbers with a negative value for the focal length but I...
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    Relating B and E in an electromagnetic wave

    Homework Statement I need to determine B(rms) in terms of E(max) given a standard E-M wave. Homework Equations E = cB The Attempt at a Solution I assumed that B(max) is sqrt(2) x B(rms) and then just plugged in for B(max) in the equation above. Am I right in assuming the rms...
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    Potential difference required to stop a particle

    Homework Statement A particle with a charge-to-mass ratio of 50 C/kg is moving at a speed of 200 m/s. What electric potential difference is required to stop the particle? Homework Equations F = Eq? The Attempt at a Solution I am completely uncertain how to start this problem...