Ultimate Physics Study Guide - Questions & Answers

15. When objects are moved further apart from each other, the force ofgravity between them
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When an external objects frequency matches that of an adjacent objects natural frequency, (blank) may occur.
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If an object has a mass of 8 kg, what is its approximate weight on Earth?
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How does muscle fatigue affect the amount of work that muscles can do?
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material speed of lightspace 3 x 108 m/swater 2.25 x 108 m/sglass 2 x 108 m/sair 3 x 108 m/sLight moves from air into a new material. The greatest refraction would occur when light passes through which material?A. airB. waterO c. glassD. It would refract the same amount in each material.
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Compared to visible light, ultraviolet radiation is more harmful to human skin and eyes because ultraviolet radiation has which of thefollowing characteristics?A higher frequencyB. longer wavelengthC. higher speedD. longer period
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The normal force acts ________________________ to the surface and the friction force act _______________ to the surface.
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Changes in forms of energy are called energy?
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Under what situation can an object experience multiple forces, but yet experience no acceleration aAn object can experience multiple forces, so long as the net force is zero bAn object can experience multiple forces, so long as they all act in the same direction cAn object can experience multiple forces, so long as the mass is proportional dAn object can experience multiple forces, so long as they are all the same type of force
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An experiment is being done. Name the independent variable, and the dependent variable for the following question.Does surrounding color affect an insect's eating habits?Independent variableDependent Variable
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25 Points PLEASE I need HelpIf we decrease the amount of force, and keep all other factors the same, what will happen to the amount of work? The amount of work will go down because the distance will decrease. The amount of work will go up because the distance will decrease. The amount of work will go down because the distance will increase. The amount of work will go up because the distance will increase.Please Help
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Which of the following equations defines the law of conservation of energy?total energy = kinetic energy - potential energytotal energy = kinetic energy - potential energytotal energy = potential energy - kinetic energytotal energy = potential energy - kinetic energytotal energy = kinetic energy + potential energytotal energy = kinetic energy + potential energytotal energy = kinetic energy x potential energy
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Describe the process by which an electromagnetic wave is produced.A. An electrically charged particle vibrates, producing only an electric field that moves.B. An electrically charged particle vibrates, producing electric and magnetic fields.C. A magnetic field and an electric field collide, producing energy and light.D. Radio waves break down into smaller wavelengths, producing new waves.
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An electric kettle is rated at 2 kW when connected to a 230 V electrical supplya Calculate the current when the kettle is turned on.b What value fuse should be included in the circuit of the kettle?(Assume that the fuses available are 3 A, 5A and 13 A.)c Modern kettles often have double insulation. Explain what this meansand how it provides extra safety for the user.d ) Calculate the resistance of the heating element of the kettle.
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What color in the visible spectrum has the highest energy?A. red, because it has the longest wavelengthB. red, because it has the shortest wavelengthc. violet, because it has the shortest wavelengthD. violet, because it has the longest wavelength
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PLEASE HELP :/george walks to a friend's house. he walks 750 meters north, then realizes he walked too far he turns and walks 250 meters south. the entire walk takes him 50 seconds whats his distance and displacement?
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PLEASE HELP :/george walks to a friend's house. he walks 750 meters north, then realizes he walked too far he turns and walks 250 meters south. the entire walk takes him 50 seconds whats his distance and displacement?
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If mass A is 1.0 kg, mass B is 5.0 kg, and the frictional pulley has a mass of 0.5 kg and a radius of 0.15 m, what is the velocity of A and B at 0.5 seconds?a. A = 1.72 m/s, B = 0.22 m/sc. A = 0.22 m/s, B = 1.72 m/sb. A = 3.14 m/s, B = -3.14 m/sd. A = -3.14 m/s, B = 3.14 m/s
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As increases towards 90 what happens to the horizontal and vertical components of F?
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The accompanying map shows the route traveled by a school bus.What is the magnitude of te dispacment odte school bus fo start to te end of its trip?
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How are stars formed
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If a person and wheelchair have a combined weight of 185 lb, how much ideal effortforce is required to travel up the ramp?
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A ball is thrown with velocity 30.ms1at an angle of 40. below the horizontal. What is the magnitude of the horizontal component of the velocity? Give your answer to the nearest ms1 and do not include units with your answer.
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A train running along a straight track at 32.90 m/s is slowed at a rate of 0.783 m/s/s to a stop how far did the train travel before coming to rest ?
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