Physics

an inductor must be selected for a circuit that will exactly match the reactance of a 711.3 nf capacitor in a 120 v, 58.0 hz source. determine the required inductance. g
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An object in free fall has a velocity of 5 m/s in the upward direction. What is the instantaneous velocity of the object one second later?
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Two identical insulated metal spheres are equally charged and separated by a distance of 0. 1 m. The resulting force between the spheres is 8. 1 x 10^-8N. What is the force if the size of each change is tripled? Show your calculation.
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13. If the supply of gasoline rises, name a substitute that will increase in demand? 14. How do you think each of the following affected the world price of oil? List if it will effect supply or demand, and the price change if any. Use basic supply and demand analysis. a. Tax credits were offered for expenditures on home insulation. b. The Alaskan oil pipeline was completed. c. Oil was discovered in Mexico and the North Sea. d. Sport Utility Vehicles and minivans became popular. e. Natural oil reserves became depleted
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You put a force of 550n in an area of 9 cm on the tops of my feet! the pressure onmy feet was 611111 pa. what is the ratio of this pressure toatmospheric pressure?
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with the switch open, the potential difference across the capacitor in figure p23.44 is 10.0 v. after the switch is closed, how long will it take for the potential difference across the capacitor to decrease to 5.0 v?
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Use the internet or consult your senior in your locality to search for the scope of different branches of science.based on your findings prepare a presentation or report on the scope of science
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In a vacuum, electromagnetic radiation of short wavelengths.
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Which of these is NOT considered an example of low EM energy? A. infra-red B. microwaves C. ultra-violet D. radio waves
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What is the inertia of motion?
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Two bumper cars collide into each other and each car jolts backwards this is an example of which of newtons laws?
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Based on the text how might the surfing "purists" feel about the movement toward incorporating aerial moves into surfing competitions? Use evidence from the text to support your answer
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_______ assisted Anton Raphael Mengs with the iconography of his ceiling fresco, Parnasus, in the Villa Albani.A) Johann WinckelmannB) Cardinal AlbaniC) Jacques Louis DavidD) Joshua Reynolds
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For the next three questions: A bungee jumper of mass m stands on a platform of height h over a canyon attached to a bungee cord with un-stretched length L and spring constant k.19) Determine the energies and use energy bar charts to illustrate them at the positions a, b, and c (see the figure), as the jumper goes through from the time he starts to jump until the time he stops (at the end of the stretched bungee cord). 20) Determine the energy transfers from position a to b and b to c. 21) Write the energy conservation equation from the start of the jump to the stopping point, which will allow you to find the stretched length AL of the bungee cord. 22) Solve the equation for the stretched length (no numbers, just the variables).
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Hunter pushed a couch across the room. He did 800 J of work in 20 seconds. The couch weighed 500 N. How much power did he have?A. 40 WB. 1. 6 WC. 16,000 WD. 800 WSUBMIT
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Two charged spheres electron and proton are 10 cm apart attract each other. The charge of the spheres are 9. 11 x 10-31 C and 1. 67 x 10-27 C. What force resultsfrom each other? What will be the force if the separation is increased to 30 cm?
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A boy of mass 60 kg and a girl of mass 40 kg are together and at rest on a frozen pond and push each other apart. The girl moves in a negative direction with a speed of 3 m/s. What must be the final momentum of the boy?A. 100 kgm/sB. 120 kgm/sC. -120 kgm/sD. 40 kgm/s
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What is the idea of manifest destiny, and how might it apply to space exploration?
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Anna mixes 200 g of hot coffee at 90 oC with 50 g of cold water at 3 oC to bring down thetemperature of the coffee. Explain what happens to the mixture using kinetic molecular model.
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A. 149 kg baseball moving at 17. 7 m/s is caught by a 57 kg catcher at rest on an ice skating rink,wearing frictionless skates. With what speed does the catcher slide on the ice?Do NOT put in units or it will be marked wrong! The answer's value only! Please round eachanswer to 3 places. Mava + MbVb = (Ma+b)(Va+b)
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Why are relativistic calculations particularly important for electrons
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A diver makes 1.0 revolutions on the way from a 9.5-m-high platform to the water. assuming zero initial vertical velocity, find the diver's average angular velocity during a dive.
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A flashlight bulb is connected to a dry cell of voltage 5.25 V. It draws 15 mA (1,000 mA = 1 A). Its resistance is 2.5 E2 ohms 3.0 E2 ohms 3.5 E2 ohms 4.0 E2 ohms
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The figure shows a 25-cm-long metal rod pulled along two frictionless, conducting rails at a constant speed of 3. 5 m/s. The rails have negligible resistance, but the rod has a resistance of 0. 65
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