Physics

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The mass of the Moon is about 1/80th of the mass of Earth. The force exerted by Earth on the Moon is ... Started by go.lag	3 Replies 118 Views	Jul 29, 2018 by brittanywood
A certain crystal has an interatomic spacing of 0.442 nm. A beam of neutrons moving with a speed of ... Started by sammy	1 Replies 79 Views	Jul 29, 2018 by Tonny
An object is made up of three masses connected by massless rods of fixed length. Mass A is ... Started by ts19998	1 Replies 73 Views	Jul 29, 2018 by mathjasmine
The electron was discovered in 1897 by the English physicist J. J. Thomson. Indicate whether the ... Started by captainjonesify	1 Replies 51 Views	Jul 29, 2018 by at
An object is moving with constant velocity. Which of the following statements is true? A) A ... Started by cmoore54	3 Replies 91 Views	Jul 29, 2018 by Sweetkitty24130
Ernest Rutherford tested Thomson's model by directing a beam of beta particles, at a thin gold foil. ... Started by renzo156	1 Replies 202 Views	Jul 29, 2018 by bitingbit
A rock is suspended from a scale reads 10.0 N. A beaker of water is raised up so the rock is totally ... Started by frankwu	1 Replies 108 Views	Jul 29, 2018 by Athena23
A constant net force acts on an object. Describe the motion of the object. A) constant non-zero ... Started by tiffannnnyyyyyy	1 Replies 123 Views	Jul 29, 2018 by Gabe
A pencil, 15.7 cm long, is released from a vertical position with the eraser end resting on a table. ... Started by savannahhooper	3 Replies 182 Views	Jul 29, 2018 by Dominic
Imagine that the metal head of a hammer is loose. In order to get the hammerhead tight again you ... Started by saliriagwu	1 Replies 78 Views	Jul 29, 2018 by kswal303
A mirror is rotated at an angle of 10 from its original position. How much is the rotation of the ... Started by karen	1 Replies 114 Views	Jul 29, 2018 by anoriega3
A barge with vertical sides is 10.0 m wide and 60.0 m long and is floating in fresh water. How much ... Started by Anajune7	1 Replies 193 Views	Jul 29, 2018 by nyrave
A rabbit trying to escape a fox runs north for 8.0 m, darts northwest for 1.0 m, then drops 1.0 m ... Started by bobbie	3 Replies 74 Views	Jul 29, 2018 by ryrychapman11
You walk 53 m to the north, then turn 60 to your right and walk another 45 m. Determine the ... Started by D2AR0N	1 Replies 113 Views	Jul 29, 2018 by juliaf
A hot air balloon plus its cargo has a mass of 400 kg, and it holds 700 m3 of hot air. It is ... Started by xroflmao	1 Replies 116 Views	Jul 29, 2018 by succesfull
Bohr's model of the structure of an atom includes ideas from both classical and quantum physics. ... Started by audragclark	1 Replies 129 Views	Jul 29, 2018 by swimkari
The kinetic energy of the electron in the first Bohr orbit of hydrogen is 2.18 J. Indicate ... Started by chandani	3 Replies 134 Views	Jul 29, 2018 by jxjsniuniu
A solid disk is rolling without slipping along a horizontal surface with a speed of 4.50 m/s when it ... Started by CharlieWard	1 Replies 92 Views	Jul 29, 2018 by ecox1012
A helicopter is flying horizontally with a speed of 444 m/s over a hill that slopes upward with a 2 ... Started by notis	1 Replies 238 Views	Jul 29, 2018 by bookworm410
The focal length of a convex mirror is -20 cm. What is its radius of curvature? A) -10 cm B) 40 ... Started by karateprodigy	1 Replies 102 Views	Jul 29, 2018 by wergv
The Bohr model correctly predicts the energy for the ground state of the hydrogen atom. Indicate ... Started by MirandaLo	3 Replies 114 Views	Jul 29, 2018 by fffftttt
A charge of 12. C passes through an electroplating apparatus in 2.0 min. What is the average ... Started by Arii_bell	1 Replies 67 Views	Jul 29, 2018 by nikmaaacs
A cylinder, semicircular in cross-section, 10.0 m long and 5.00 m in radius, is completely submerged ... Started by Zulu123	1 Replies 70 Views	Jul 29, 2018 by courtney_bruh
In a certain one-lane road there are no entrances or exits. As the road passes through open country ... Started by cookcarl	1 Replies 190 Views	Jul 29, 2018 by lorealeza
A 10-m plank with a mass of 80 kg is being moved by rolling it over two cylindrical logs, each with ... Started by joe	3 Replies 51 Views	Jul 29, 2018 by ntsoane kedibone