Ultimate Physics Study Guide - Questions & Answers

if you drop your textbook it falls because the earth pulls it downward. at the same time, your textbook pulls on the earth with a force that is group of answer choices zero. equal to the downward pull on the textbook and in the same direction. immeasurably small. equal to the downward pull on the textbook but in the opposite direction.
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The element carbon-14 can change to nitrogen 14 by losing twoneutrons. ________O the most common isotopeO an isotope of nitrogenO a stable isotopeO a radioactive isotope
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a planet has 1/2 the mass of earth and 2 times the radius of earth. what is the acceleration due to gravity?
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stars that have mass than the sun will end their lives as neutron stars. a. more b. less c. the same
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how long would the day have to be in order that a person standing at the equator of the earth would see a bathroom scale that she is standing on read 0
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two tuning forks having frequencies of 454 and 460 hz are struck simultaneously. what average frequency (in hz) will you hear?
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which object has greater acceleration when acted on by gravitational forces? a 2 kg apple, a 7 kg bowling ball, or a 20 kg roc
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at one point in the pipe, the radius is 0.160 mm . what is the speed of the water at this point if the volume flow rate in the pipe is 1.20 m3/sm3/s .
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if the signal strength from an omnidirectional radio source is 100 mw at 10 meters, how strong will it be at 30 meters, ignoring absorptive attenuatio
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a btu is defined as the amount of energy required to raise the temperature of one lb of water by one degree celsius group of answer choices true false
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after you push both the car and the truck for the same amount of time with the same force, what can you say about the momentum and kinetic energy (ke) of the car and the truck? ignore friction.
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a thin film of thickness 280 nm and index of refraction 1.4 coats a plate of glass having index of refraction 1.65. if light is perpendicularly incident on the glass, at what wavelength is the reflected light minimal?
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james throws a baseball straight upward. we can ignore air resistance.what is true about the acceleration and velocity of the ball on its way down?assume that upward is the positive direction.
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find the ratio of the new/old periods of a pendulum if the pendulum were transported from earth to mercury, where the acceleration due to gravity is 3.70 m/s2.
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a 7.9 cm diameter loop of wire is initially oriented perpendicular to a 2.2 t magnetic field. it is rotated so that its plane is parallel to the field direction in 0.35 s. what is the average induced emf in the loop?
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A converging lens with a focal length of 40 cm and a diverging lens with a focal length of -40 cm are 160 cm apart. A 2.5 cm-tall object is 60 cm in front of the converging lens.Calculate the image position. cm in front of the second lens.Calculate the image height.
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1. A bullet of mass 0.02-kg is shot horizontally into a wooden log, striking it with avelocity of 200a) If it penetrates 4-cm before stopping, what is the stoppingforce i.e friction force? (work = change in kinetic energy)b) What is the acceleration of the bullet while slowing in the log.c) How long does it take for the bullet to stop?
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A 10.-kilogram rubber block is pulled horizontally at constant velocity across a sheet of ice. Calculate the magnitude of the force of friction acting on the block.
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When choosing appropriate art materials avoid
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have the highest rates of star formation.target 1 of 6 2. the largest individual galaxies in the universe are known as blank.target 2 of 6 3. the collective activity of many supernova events in a relatively small volume of a galaxy can create blank.target 3 of 6 4. the most luminous objects in the universe a
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hey, remind me about the expansion of spacetime driven by dark energy: what kind of universe do we live in?
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do i need to adjust the tension on my elna super sewing machine when using denim fabric and 100/16 needles?
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a ball is thrown directly upward with a velocity of 20m/s at the end of 4s its velocity will be closest to
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distance also plays a role in the force of gravity. explain how the force changes with respect to distance.
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