Physics

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Our bodies, at 37.C, emit radiation which peaks at what wavelength? What will be an ideal ... Started by 123654777	3 Replies 114 Views	Jul 27, 2018 by cassie_ragen
When a 60-Hz voltage is applied to a 22-F capacitor, the capacitive reactance is A) 121 . B) 760 ... Started by cnetterville	1 Replies 108 Views	Jul 27, 2018 by kbennett34
The Moon, Mercury, and Mars do not have plate tectonics because A) they have cooled so rapidly ... Started by tatyanajohnson	1 Replies 64 Views	Jul 27, 2018 by todom5090
The curved surface of a 50. cm focal length plano-convex lens has a radius of curvature of 30. cm. ... Started by kwoodring	1 Replies 128 Views	Jul 27, 2018 by sarahccccc
Even though Venus is almost the same size as the Earth it does not have plate tectonics. This is ... Started by cnetterville	3 Replies 113 Views	Jul 27, 2018 by sultansheikh
A camera uses a biconvex lens made of glass with an index of refraction of 1.60 and has a radius of ... Started by urbanoutfitters	1 Replies 104 Views	Jul 27, 2018 by lkoler
The extent of thermal escape in a planetary atmosphere is dependent A) only on the temperature of ... Started by imowrer	1 Replies 68 Views	Jul 27, 2018 by harveenkau8139
A double convex lens has faces of radii 18.0 cm and 20.0 cm. When an object is placed 24.0 cm from ... Started by folubunmi	1 Replies 75 Views	Jul 27, 2018 by millet
What is the resolution limit at 400. nm, due to diffraction, of the Hubble Space Telescope which has ... Started by mwit1967	3 Replies 124 Views	Jul 27, 2018 by cclemon1
The sweeping of atmospheric gas particles into space by the Sun is referred to as A) a solar ... Started by iveyjurea	1 Replies 52 Views	Jul 27, 2018 by nanny
A 4.0 cm high object is 20. cm in front of a 1.333 Diopter plano-convex lens. (a) Find the image ... Started by bobbysung	1 Replies 118 Views	Jul 27, 2018 by pallen55
An electron is confined to a one-dimensional box of width 0.10 nm, about the size of an atom. What ... Started by drink	1 Replies 91 Views	Jul 27, 2018 by jaygar71
If the energy of a particle in a box in the ground state is E, what is the energy in the state n = ... Started by Cooldude101	3 Replies 106 Views	Jul 27, 2018 by pratush dev
An ice skater performs a pirouette (a fast spin) by pulling in his outstretched arms close to his ... Started by kellyjaisingh	1 Replies 105 Views	Jul 27, 2018 by Kingjoffery
Smaller worlds are more prone to atmospheric loss via impacts than large worlds because they A) ... Started by cabate	1 Replies 215 Views	Jul 27, 2018 by ririgirl15
You are designing a generator with a maximum emf 8.0 V. If the generator coil has 200 turns and a ... Started by Chloeellawright	1 Replies 171 Views	Jul 27, 2018 by poopface
A spaceship visits Alpha Centauri and returns to Earth. Alpha Centauri is 4.5 light-years from Earth ... Started by awywial	3 Replies 167 Views	Jul 27, 2018 by meganlapinski
Assume you are a particle in a box called the universe. Estimate your minimum kinetic energy. ... Started by mydiamond	1 Replies 76 Views	Jul 27, 2018 by dudman123
Who started launching liquid-filled rockets in the United States in 1926? A) Robert Goddard B) ... Started by Garrulous	1 Replies 64 Views	Jul 27, 2018 by af
Consider a camera with a 20. cm diameter lens recording images at 600. nm wavelength. (a) What is ... Started by tnt_battle	1 Replies 99 Views	Jul 27, 2018 by mjenn52
A metallic surface has a work function of 2.50 eV. What is the longest wavelength that will eject ... Started by Sufayan.ah	3 Replies 198 Views	Jul 27, 2018 by jsm54321
A generator coil rotates through one revolution 60 times each second. The frequency of the emf is ... Started by MirandaLo	1 Replies 94 Views	Jul 27, 2018 by wilsonbho
Chemical rockets work on which basic physical principle? A) Kepler's first law of planetary ... Started by ec501234	1 Replies 80 Views	Jul 27, 2018 by ergserg
A person approaches a plane mirror at a speed of 2 m/s. How fast does he approach his image? A) 1 ... Started by biggirl4568	1 Replies 112 Views	Jul 27, 2018 by SAUXC
Which terrestrial planet(s) have magnetic fields? A) Earth and Venus B) Earth only C) all of ... Started by luminitza	3 Replies 128 Views	Jul 27, 2018 by mcabuhat