Master Physics with Fun Quizzes & Brain Teasers!

suppose a 32 mh inductor has a reactance of 95 .What would be the frequency in Hz
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what is the rms speed of a sample of o2 at 30.39 c, in m/s?
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6. A 100 V, DC Generator delivers 50 A at a rated speed of 1200 r.p.m. The armature andseries filed resistance are 0.04 O and 0.06 I respectivelyCalculate The Output Power when the speed is 900 r.p.m
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a 15m beam is supported at the ends by twi walls. the beam weighs 229n and supposrts a 492n air unit 2m from the right wall. frind the force the left wall must support
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what mass of aluminum metal can be produced by electrolysis of aluminum nitrate by a current of 1.5 amp in 2.5 hours? a. 1.3 g b. 3.8 g c. 0.047 g d. 0.14 g
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In a section of horizontal pipe with a diameter of 3.00 cm the pressure is 100kPa and water is flowing with speed of 1.50 m/s. The pipe narrows to 2.00cm. What is the pressure in the narrower region?
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which equation could be used to find the velocity of the center of the gear
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A 1.5 V battery is connected to a 250 F capacitor. How much charge is found on the capacitor plates?
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these are the bright hot centers of active galaxies, usually associated with bipolar jets of material being ejected from the center at speeds approaching half the speed of light.
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Are any radiations counted when the tube voltage is below the threshold voltage? Explain.
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true/false. ct involves the use of electrical shock to produce a cortical seizure accompanied by convulsions
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Write an equation showing the fate of acetic anhydride if the sodium acetate solution is not added quickly. (i.e. what would happen if the acetic anhydride were allowed to stay in contact with the aqueous solution of the hydrochloric acid salt of aniline?)
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3)the planet venus has almost no equatorial bulge because it is rotating slowly (assume j2= 0). is it possible to have a sun synchronous orbit around venus? explain your answer.
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The next step is to calculate the flood recurrence intervals and rank flood events by their maximum discharge and their recurrence intervals. From this data, it is possible to calculate the probability of the flood recurring. Table 1 (page 7) lists nine years of maximum daily streamflow stage (cfs) for the Big Thompson River. (6 pts)In the third column, rank this data by year from the largest amount (rank of 1) to the smallest (rank of 9).In the fourth column, calculate the probability, in percent, of the flood recurring using the formula:rank/( n + 1 ) 100 ; where n = the number of years with available dataIn column five, rank the recurrence intervals. This is determined by the following equation:RI = (N + 1)/MWhere: RI = the recurrence intervalN is the number of years the floods are on recordM is the rank of the flooding event (largest flood M = 1)Because there are nine year
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The relationship between the velocity, frequency, and wavelength of a wave is given by yo . Since the frequency remains constant when light travels between different media, an expression can be written to solve for For medium I, v, - , and for medium 2. v, -fh. By making an appropriate substitution, write a mathematical expression for i, in terms of .v,,and . Show all your work.
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A car is doing a loop-the-loop. The loop has a radius of .4 m. Assume the car is starting with the minimum speed it needs in order to stay in contact with the track at all times (at the top of the track, the car is not applying a force to the track). Neglect friction. What is the minimum initial speed the car must have in order to remain in contact with the circular track at all times?
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true/false. the center of gravity of a loaded truck depends on how the truck is packed.(figure 1)
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object a has mass 8 kg and initial momentum kgm/s, just before it strikes object b, which has mass 13 kg. just before the collision object b has initial momentum kgm/s.
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find probability a particle scatters at a given angle for d sigma d omega
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the electron beam path isn't exactly circular; it spirals slightly inward. why is this? (hint: what variables affect the beam's radius?)
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obtain an expression for the electric field in the region rrrr . express your answer in terms of the variables rr , rr , rho0rho0 , and appropriate constants.
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the figure above shows a truck pulling three crates across a rough road. which of the following shows the directions of all the horizontal forces acting on crate 2 ?
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which graph shows the variation with time t of the kinetic energy of an object undergoing simple harmonic motion of period t
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what mass of sucrose (c12h22o11) should be combined with 508 g of water to make a solution with an osmotic pressure of 8.80 atm at 315 k ? the density of the solution is 1.08 g/ml .
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