Physics

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Gravity waves are produced when a mass accelerates. Indicate whether the statement is true or ... Started by futuristic	1 Replies 40 Views	Jul 29, 2018 by daiying98
The force fo static friction between two surfaces is parallel to the surface of contact, and in in ... Started by mia	1 Replies 62 Views	Jul 29, 2018 by DHRUVSHAH
Some light switches that glow in the dark after the lights are turned off employ A) fluorescence. ... Started by audie	3 Replies 65 Views	Jul 29, 2018 by Juro
Argon rather than air is the gas used in incandescent bulbs because A) it produces a pleasing ... Started by viki	1 Replies 28 Views	Jul 29, 2018 by fatboyy09
A 3.50-g bullet, traveling at 250 m/s, hits a hinged, light board at right angles, at a distance of ... Started by Capo	1 Replies 42 Views	Jul 29, 2018 by karlss
To keep chickens in a chicken coop warm, the kind of lamp to use is A) fluorescent. B) CFL. C) ... Started by codyclark	1 Replies 56 Views	Jul 29, 2018 by Chou
A person's eye lens is 2.8 cm away from the retina. What must the focal length of this lens be in ... Started by abern	3 Replies 48 Views	Jul 29, 2018 by 6ana001
White-light LEDs employ A) phosphors. B) white-emitting diodes. C) extra-high electrical ... Started by newbem	1 Replies 46 Views	Jul 29, 2018 by scottmt
The efficiency of classroom-demonstration lasers is typically A) about one percent. B) about ten ... Started by Wadzanai	1 Replies 33 Views	Jul 29, 2018 by Shshxj
Which light source is more energy-efficient? A) a fluorescent lamp B) an incandescent lamp C) a ... Started by kwoodring	1 Replies 127 Views	Jul 29, 2018 by yahahah24021
The lamp most similar to the common fluorescent lamp is the A) LED. B) CFL. C) incandescent ... Started by savannahhooper	3 Replies 109 Views	Jul 29, 2018 by anoriega3
An apparatus for measuring the mechanical equivalent of heat uses a crank to turn a small aluminum ... Started by Sufayan.ah	1 Replies 87 Views	Jul 29, 2018 by Chocorrol77
According to the principle of complementarity, wavelike and particle-like properties of light A) ... Started by washai	1 Replies 79 Views	Jul 29, 2018 by morganmarie791
A 5.00-g lead bullet moving at 440 m/s penetrates a wood block and comes to rest inside the block. ... Started by maychende	1 Replies 576 Views	Jul 29, 2018 by miss_1456@hotmail.com
The focal length of the lens of a simple camera is 40.0 mm. How far must the lens be moved to change ... Started by jilianpiloj	3 Replies 137 Views	Jul 29, 2018 by Fayaz00962
A quantum of light is called A) a proton. B) a neutron. C) an electron. D) a neutrino. E) ... Started by Davideckstein7	1 Replies 57 Views	Jul 29, 2018 by akudia
When an object is in translational equilibrium, the net force acting on the object is non-zero. ... Started by rl	1 Replies 86 Views	Jul 29, 2018 by bimper21
The first to be credited with the idea that light is quantized was A) Max Planck. B) Albert ... Started by BrownTown3	1 Replies 55 Views	Jul 29, 2018 by sultana.d
The mass number is equal to the number of what particles in the nucleus? A) protons B) neutrons ... Started by altibaby	3 Replies 80 Views	Jul 29, 2018 by sarahccccc
Which has more energy per photon? A) red light B) blue light C) both the ... Started by K@	1 Replies 43 Views	Jul 29, 2018 by macagnavarro
In the equation E = hf, the symbol E stands for A) excitation. B) efficiency. C) energy. D) ... Started by LCritchfi	1 Replies 44 Views	Jul 29, 2018 by olivia_paige29
Applying E = hf to photon emission from an atom, the symbol E represents the energy A) of the ... Started by yoooooman	1 Replies 24 Views	Jul 29, 2018 by yahahah24021
In the equation E = hf, the symbol f stands for A) wave frequency. B) wavelength. C) rate at ... Started by shenderson6	3 Replies 50 Views	Jul 29, 2018 by Joy Chen
The phenomenon easily explained only in terms of the particle model of light is A) reflection. ... Started by Mollykgkg	1 Replies 55 Views	Jul 29, 2018 by BAOCHAU2803
Which of the following is quantized? A) energy B) radiation C) number of atoms in a gold bar ... Started by amal	1 Replies 64 Views	Jul 29, 2018 by Kjones0604