Ultimate Physics Study Guide - Questions & Answers

a 5-gram particle mass carries a charge of 5 x 10-6 c and is moving in an electric field of 100 v/m. what is the acceleration of the particle? (note on units for electric field: v/m
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protons within a nucleus are attracted to each other by group of answer choices the nuclear force. opposite charges. their energy levels. electron repulsion.
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a particular tuning fork generates sound waves at a frequency of 440-hz. if you are 10 meters away from the tuning fork, how many wavelengths are contained between you and the fork?
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a mass-spring system in simple harmonic motion has an energy of 4.04 j and an amplitude of 21 cm. find the maximum force that the spring exerts on the mass. (be careful with units!)
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an electron is placed at a position on the x-axis where the electric potential is 10 v. which idea below best describes the future motion of the electron?
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a 40cm diameter wheel accelerates uniformly from 240 rpm to 360 rpm in 6.5 seconds. how far will a point on the edge of the wheel have traveled in this time
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a. leds cannot be made of silicon because silicon has a smaller band gap compared to gaas. b. gaas has a larger band-gap compared to silicon therefore it can absorb a larger portion of the sunlight energy. c. by adding impurities that facilitate and accelerate carrier recombination, solar cell efficiencies can be improved. . removed! m. work function of aluminum is smaller than the distance between conduction band of silicon and vacuum level, therefore, aluminum contacts with n-type silicon result in schottkey junctions.
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a dad pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 15 rpm in 10.0 s. assume the merry-go-round is a uniform disk of radius 2.5 m and has a mass of 330 kg, and two children (each with a mass of 25 kg) sit opposite each other on the edge. calculate the torque required to produce the acceleration, neglecting frictional torque. what force is required at the edge?
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one force of 6.2 newtons and one force of 4.4 newtons act on a body at the same point so that the resultant force is 9.1 newtons. find the angle between the resultant and the larger force, to the nearest 10th of a degree.
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a performer seated on a trapeze is swinging back and forth with a period of 8.85 s. if she stands up, thus raising the center of mass of the trapeze % performer system by 35.0 cm, what will be the new period of the system? treat trapeze % performer as a simple pendulum
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an airplane flies horizontally at a speed of 351 km/h and drops a crate that falls to the horizontal ground below. neglect air resistance.part (a) if the altitude of the plane was 580 m, then how far, horizontally in meters, did the crate move as it fell to the ground?
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solar eclipses are slightly more common than lunar eclipses. why, then, is it more likely that your region of the country will experience a lunar eclipse than a total solar eclipse? umbra
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design a base isolation system for an electronic module of mass 5 kg so that only 10% of the displacement of the base is transmitted into the displacement of the module at 50 hz. what will the transmissibility be if the frequency of the base motion changes to 100 hz?
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Reduced-voltage starting provides ___ current draw over a longer period of time than full-voltage starting
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If a cable originates inside one building and leaves the building, the landlord loses control of that cable. T or F?
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When the filament breaks in one lamp in a parallel circuit, lamps in other branches of the circuit normally _________.continue glowing as brightlyabsorb energy from the damaged lampgo outcontinue glowing, but dimme
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Which of the following is a valid data sensitivity labeling and handling category? (Choose all that apply.)
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earths land areas, oceans, and atmosphere maintain fairly constant average temperatures. what is the best explanation for these constant average temperatures?
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A player kicks a football from the ground with a velocity of 27 m/s at an angle of 25o above the horizontal. How long does the ball stay in the air?
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A wave has a velocity of 20 m/s and wavelength of 3.6 what the frequency of the wave
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the internal pressure of the rock formation causes fluid to return to the surface through the wellbore. what is the fluid called
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if it requires energy u to accelerate a rocket fro rest to 1/2c the energy needed to acclerate a rocket from 1/2 c to c would be
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what brake diagnostic tool is used to measure the change in angle of a truck chassis when it is subjected to aggressive braking?
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if you move an object to a planet with a larger radius, what happens to the gravitational acceleration?
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