Physics, 24.04.2020 23:33 itasykamila
Match the words in the left-hand column to the appropriate blank in the sentences in the right-hand column. Use each word only once.
1. The MAIN-SEQUENCE LIFETIME is greater for low-mass stars than it is for high-mass stars.
2. The stars known as SUPERGIANTS are the very largest and brightest of all the stars.
3. Most of the stars near the Sun are MAIN-SEQUENCE STARS.
4. Stars are classified on the basis of their spectral type and LUMINOSITY CLASS.
5. Cepheids are examples of PULSATING VARIABLE STARS.
6. WHITE DWARFS are no longer generating energy through nuclear fusion.
7. Stars that are cooler than the Sun yet 100 to 1,000 times as luminous as the Sun are classified as GIANTS
Answers: 1
Physics, 22.06.2019 03:30
What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.
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Physics, 22.06.2019 18:00
Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c
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Physics, 22.06.2019 19:50
Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j
Answers: 3
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