Physics

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Consider an aluminum rod encircling the Earth (radius 6378. km). If the linear thermal expansion ... Started by ashley	1 Replies 88 Views	Jul 27, 2018 by Ahernandez18
A 0.30 kg mass is suspended on a string. In equilibrium the mass stretches the spring 2.0 cm ... Started by mspears3	3 Replies 164 Views	Jul 27, 2018 by cdmart10
Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where can a third positive ... Started by james	1 Replies 49 Views	Jul 27, 2018 by Mollythedog
The last page of a book is numbered 764. The book is 3.0 cm thick. What is the average thickness of ... Started by HCHenry	1 Replies 82 Views	Jul 27, 2018 by tandmlomax84
Radioactive decay is A) deterministic B) relativistic C) atomistic D) ... Started by pane00	1 Replies 76 Views	Jul 27, 2018 by aruss1303
Three identical capacitors are connected in parallel to a battery. If a total charge of Q flows from ... Started by mp14	3 Replies 113 Views	Jul 27, 2018 by braelync
Which of the following cases in the Drake equation would be the minimum necessary condition for us ... Started by MGLQZ	1 Replies 75 Views	Jul 27, 2018 by Beatricemm
The factor fnow, in the Drake equation depends on A) whether a civilization ever develops ... Started by j.rubin	1 Replies 74 Views	Jul 27, 2018 by xoxo123
Janice throws a stone horizontally from the roof edge of a 50. meter high dormitory. It hits the ... Started by APUS57	1 Replies 159 Views	Jul 27, 2018 by jennafosdick
As global warming continues, weather patterns will change causing A) some parts of the Earth's ... Started by misspop	3 Replies 96 Views	Jul 27, 2018 by cupcake16
What do we mean by the half-life of a radioactive isotope? A) it is the amount of time a person ... Started by jace	1 Replies 102 Views	Jul 27, 2018 by bookworm410
If a jet plane were to double its MACH-speed, its half-angle will A) decrease. B) increase. C) ... Started by DelorasTo	1 Replies 94 Views	Jul 27, 2018 by raili21
A sphere of diameter 7.9 cm is completely submerged in water and seems to weigh 32.0 less in the ... Started by j.rubin	1 Replies 58 Views	Jul 27, 2018 by pikon
In grinding a steel knife blade (specific heat = 0.11 cal/g-C), the metal can get as hot as 400.C. ... Started by mckennatimberlake	3 Replies 79 Views	Jul 27, 2018 by macmac
Which one of the following properties is unique to water? A) it has a high heat capacity B) it ... Started by jhjkgdfhk	1 Replies 98 Views	Jul 27, 2018 by enass
Consider an equilateral triangle of side 20. cm. A charge of +2.0 C is placed at one vertex and ... Started by Pineapplelove6	1 Replies 389 Views	Jul 27, 2018 by chevyboi1976
0.45 kg of a metal at 90.C is added to 0.40 kg of water at 20.0C. (a) If the final temperature of ... Started by a0266361136	1 Replies 128 Views	Jul 27, 2018 by mcni194
A long telephone pole (wood density 0.80 kg/m3 ) is vertically lowered into a slightly larger ... Started by lbcchick	3 Replies 89 Views	Jul 27, 2018 by mmj22343
A mass spectrometer needs A) colinear magnetic and electric fields. B) perpendicular magnetic ... Started by magmichele12	1 Replies 397 Views	Jul 27, 2018 by cpetit11
An electron moving from the negative terminal to the positive terminal of a 12. volt battery gains ... Started by ereecah	1 Replies 99 Views	Jul 27, 2018 by mtmmmmmk
A heat engine absorbs 64 kcal of heat each cycle and exhausts 42 kcal. (a) Calculate the ... Started by sam.t96	1 Replies 123 Views	Jul 27, 2018 by wilsonbho
A Coulomb per second is the same as A) a watt. B) an ampere. C) a volt-second. D) a Coulomb. ... Started by a0266361136	3 Replies 119 Views	Jul 27, 2018 by okolip
An object oscillates such that its displacement is x = (0.222m) sin(314. t) where t is in seconds. ... Started by Pea0909berry	1 Replies 71 Views	Jul 27, 2018 by mtmmmmmk
A toy rocket, of mass 60 g, achieves a velocity of 80 m/s after 3.0 s when fired straight up. What ... Started by mia	1 Replies 84 Views	Jul 27, 2018 by softEldritch
Which of the following materials has the largest conductivity (at 20C)? A) copper B) platinum ... Started by nramada	1 Replies 78 Views	Jul 27, 2018 by bigcheese9