Find the wavelength (in mm) of maximum intensity of the cosmic microwave background radiation observed today. (Hint: Use Wien's law, 2.90 x 10° nm · K ^max %3D 0.0102 X mm What band of the electromagnetic spectrum is that in? (Examine the figure.) Visible light Short wavelengths Long wavelengths 4 × 107 (400 nm)' 5 x 107 (500 nm) 6 x 107 (600 nm) 7 x 107meters ((700 nm) Wavelength (meters) 10-12 10-10 10-8 104 10-2 102 104 Gamma- Micro- X-ray Ultra- violet Radio Infrared ray wave UHF VHF FM AM a Opaque Visual window Radio window Transparent b Short Wavelength Long ultraviolet O gamma ray O microwave O O O Opacity of Earth's atmosphere

Q: Is the formula dimensionally correct?  X= xi + vt2 + 1/2 at

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Q: Solve following using Significant figure rules: - 497.2505 + 85.500 + 9.75 – 4.4

A: Given data: -497.2505 + 85.500 + 9.75 – 4.4

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Q: Find the total displacement (sum) from the following measurements: (51±2)m, (48±6)m, (-­27±3)m

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Q: Calculate 88,000 oz + 8yd3 + 1.2 m3 = __________ cc.

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Q: please explain

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A: Distance = 6 miles To find : convert into meter

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Q: what is 185 cm in feet? 1=12 in

A: 1 cm = 0.0328 feet

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.