You shine a beam of light with frequency 1/(450 [nm]) on a mirror that is moving with constant speed with respect to you. The mirror then reflected the light beam with frequency 1/(600 [nm]) to you. What is the velocity of the mirror? Note that the answer is NOT 0.28c, -0.28c, 0.143c, -0.143c, 8.4x107m/s, -8.4x107m/s, 4.3x107m/s, nor -4.3x107m/s

Q: Two forces F1 and F2 act on a 5.30kg object. Taking F 1= 20.0N and F 2 =15.0N, find the…

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Q: Problem 3:  Consider a parallel plate capacitor having plates of area 1.65 cm2 that are separated by…

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Q: (a) F1 Ө = 90° F2 (b) F1 Ө = 110° F2

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Q: A horizontal force of 10.1 N is applied at an angle of 34.9 degrees to the knob of a 71.1 cm wide…

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Q: A student connects two resistors with unknown resistance values in series, and notes that the…

A: Let the two resistors be = R1 and R2The equivalent resistance when connected in series = 725 ohm The…

Q: 3. (I) What is the current in amperes if 1200 Na* ions flow across a cell membrane in 3.5 us? The…

A: Given:Number of Na ion, n=1200Time taken, t=3.5 μs=3.5×10-6sTo find:Current,I=?

Q: Suppose you have a 9.00 V battery, a 3.8 μF capacitor, and a 7.85 μF capacitor.  Part (a)  Find the…

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Q: The current and voltage across a circuit element are given, respectively, by the equations I(t) =…

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Q: Two narrow, parallel slits separated by 0.850 mm are illuminated by 570-nm light, and the viewing…

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Q: A piece of Nichrome wire has a radius of 5.5 x 10-4 m. It is used in a laboratory to make a heater…

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Q: Part B. Index of Refraction Angles 8₁ 8₂ Angle of Incidence, 6, 26 30 Average Index of Refraction…

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Q: Q1. A small block of mass 1 kg drops from rest at the top of a curved track at a height h = 10 m and…

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Q: The figure below shows two wires carrying currents of I= 5.45 A in opposite directions, separated by…

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Q: Find the measure of the reflex angle, B. A 103° B B = [?]° Enter

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Q: IV. a. A electron with a speed of 31.5 x 106cm/s is traveling parallel to an electric field of…

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Q: Mike and Carl are fighting over a 1 kg stick.  Mike pulls to the right with a force of 30 N and Carl…

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Q: 5. Describe how you would determine your horsepower. The equipment you have at your disposal…

A: The below given steps will describe how to determine your Horse power, by the equipment you have at…

Q: Part A) Calculate the terminal voltage for a battery with an internal resistance of 0.655 Ω and an…

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Q: A 25 W speaker emits sound isotropically. What is the sound intensity level at a distance of 32 m?…

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Q: i) State the ‘law of conservation of linear momentum’?

A: Part (1): Introduction: The linear momentum of a body that the body has by virtue of its mass and…

Q: A crate of mass 65 kg is pushed along a floor with a force of 40 N for a distance of 12.11 m.…

A: Given data,    Force  =  F    Distance  =  d      To find,          Work done

Q: Suppose two billiard balls, A and B, with the same mass, undergo a head-on elastic collision. Ball A…

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Q: Which of the following is not a vector? A) electric force B) electric field C) electric charge D)…

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Q: Apply the work equation to determine the amount of work done, in N-m, by a 104 N force applied to…

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Q: A skier starts from rest on the 40° slope at time t-0 and is clocked at t - 2.96 s as he passes a…

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Q: A mechanic changing the spark plugs in a car notes that the instruction manual calls for a torque…

A: Given: Torque, T=20 NmLength, l=0.3 mtheta, θ=60oTo find:Magnitude of force, F=?

Q: A photographic slide is to the left of a lens. The lens projects an image of the slide onto a wall…

A: Only real image can be obtained on screen so image must be real.

Q: Taking R = 2.20 k and E = 190 V in the figure below, E b + R mA 4R 3R 2R d + 28 determine the…

A: R =2.20kohm, ε =190v for loop abca ε = I1R+4R(I1-I2) or ε =5R I1-4RI2 ___________(1) For loop eace…

Q: If you push a block against the wall with the force, F = 31N, ( Force is perpendicular to the wall)…

A: The force is applied perpendicular to the wall. So there are no vertical force component.

Q: A 3800 pF capacitor is connected in series to a 42.6 μH coil of resistance 2.00 Ω.  What is the…

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Q: A helium-neon laser emits light that has a wavelength of 632.8 nm. The circular aperture through…

A: Write the given values with the suitable variables. λ=632.8 nm=632.8×10-9 md=0.2 cm=0.2×10-2 ms=20…

Q: A crate of mass 65 kg is pushed along a floor with a force of 40 N for a distance of 12.11 m.…

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Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.