Physics

What evidence is there to explain the energy of two blocks?
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some music has a slow-moving pulse and some music has a fast-moving pulse. the speed at which the pulse moves in music is known as its
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light consisting of 4.8 ev photons is incident on a piece of aluminum, which has a work function of 4.3 ev.What is the maximum kinetic energy of the ejected electrons?- 9.1 eV- 4.3 eV- 4.8 eV- 0.5 eV
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The lens and mirror equation is the same for both lenses and mirrors except that it uses a positive focal length for lenses and a negative focal length for mirrors.O TrueO False
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Two pieces of clay are thrown towards each other. The blue clay has a mass of 2 kg and is traveling at 1.5 m/s east. The red clay has a mass of 1.5 kg and istraveling at 2.5 m/s west (negative velocity). They stick together after they collide. What is the final velocity of the combined clay pieces after the collision? Eastis considered positive direction.
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consider a binary system containing two stars: one with an apparent magnitude of 12.5 and the other with an apparent magnitude of 12.9. what is the combined magnitude of the two stars?
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A mass of 0.450 kg rotates at costant speed with a period of 1.45s at a radius R of 0.140 m in the apparatus used in this laboratory. What is the rotation period for a mass of 0.550 kg at the same radius? Show your work. (Extra information that might or might not be important: For the apparatus used in this laboratory, the centripetal force is the same for a fixed radius R of rotation. This wasn't stated in this question but it was in the question before it.)
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An object in free fall is accelerating downwards, so its velocity is continually increasing. Because of this, its momentum is continually increasing as well, apparently contradicting the principle of conservation of momentum. Which of Newton's laws can we use to show that momentum is actually being conserved for an appropriately defined system?
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what is the major difference between p and s waves? how do we use p waves and s waves to determine what is inside the earth?
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The acceleration of a car is zero when it is doing which of the following? - traveling over the crest of a hill at constant speed - speeding up as it descends a long straight decline - driving up a long straight incline at constant speed - bottoming out at the lowest point of a valley at constant speed - turning right at a constant speed
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ganymede is the largest moon in the solar system scientists think that ganymede, like europa, a subsurface ocean of liquid water because
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most of the mass of the solar system is located in which of the following? responses sun sun jupiter jupiter comets comets earth
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Which correctly describes a different evolutionary stage of a star like the sunA) its forms from a cold, dusty molecular cloudB) During a yellow giant stage, it burns carbon in its core and helium in the shell surrounding the core. C) After leaving the main sequence, its core is stable due to electron degeneracyD) It becomes a white dwarf after exploding as a supernovaE)During a red giant stage, its core contracts and cools
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What is the kinetic energy of the ball as it is halfway through the fall from a forty foot building? What is the potential energy?
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A missile weighing 400N on the earth surface is shot into the atmosphere to an altitude of 6.4 x 106 m. Taking the earth as a sphere of radius 6.4 x 10-6 m and assuming the inverse-square law of universal gravitation, what would be the weight of the missile at that altitude?
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for the parallel electrodes, is the average electric field in the fringe region smaller or larger than in the central region?
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which of the following will increase the capacitance of a parallel-plate capacitor? (there could bemore than one correct choice.) a) an increase in the charge on the platesb) an increase in the potential difference
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what is the difference in energy in joules between successive values of the oscillation energy? express your answer to two significant figures and include the appropriate units.
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Please help me on this physics question
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A current of O.S.A flows in a circuit with resistance 60 calculate the potential difference of the circuit
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if the same horizontal net force were exerted on both vehicles, pushing them from rest over the same distance, what is the ratio of their final kinetic energies?
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two balls are connected to 60-cm-long light strings and the other ends of the strings are fixed together as shown in the figure. one of the balls has a mass of 2.0 kg and is raised up and to the right until it is 12.0 cm higher than the other ball, which has a mass of 3.0 kg. the upper ball is released from rest and sticks to the lower ball when they collide. for the subsequent motion find the:
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a 2.70 kg ball is attached to a ceiling by a 1.35 m long string. the height of the room is 4.45 m. what is the gravitational potential energy of the ball relative to the ceiling?
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Anne says that the mechanical advantage of a 2.00 meter ramp that is 0.50 meters high is 0.25. Is she correct? Why or why not? (show work!)MA=length of ramp/height of ramp
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