Physics Questions & Answers

Physics Questions & Answers - CORRECT ANSWER- frequency does not change between mediums helium is a lie aberration - CORRECT ANSWER- spherical aberration: assumption of sin(theta) = theta light at top of lens is refracted more, shorter focal length so not all rays go through focal length, inherent property with spherical lens chromatic aberration: dispersion says greater wavelengths have smaller index of refraction red refracts less than blue acceleration - CORRECT ANSWER- a = v/t, vector area under curve is velocity g = 10 m/s^2 bernoulli's equation - CORRECT ANSWER- bernoulli's equation P + ρgh + 1/2 ρv^2 = constant continuity equation (volume flow is constant) vA = constant pascal's principle (pressure is transmitted to every surface) V = Ad = constant P = F/A = constant W = Fd = constant venturi effect (constriction in pipe causes increased velocity because of continuity equation, thus causes decreased pressure because of bernoulli's equation) P + 1/2 ρv^2 = constant circuit properties - CORRECT ANSWER- current: I = Q/t units: amp (A) = C/s voltage: V = IR units: V = A*ohm resistance is a property of the wire, so only V and I can realistically be changed resistance: R = pL/A R is directly proportional to T units: ohm capacitance: Q = VC C = keA/d U = 1/2 C V^2 (potential energy stored by capacitor) units: farad (F) = C/V power: P = IV