Master Physics with Fun Quizzes & Brain Teasers!

Write the expression for the Broglie wavelength associated with a charged particle having charge 'q' and mass 'm', when it is accelerated by a potential V.
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An air-track glider attached to a spring oscillates between the 10.0 cm mark and the 51.0 cm mark on the track. The glider completes 13.0 oscillations in 33.0 s. What are the (a) period, (b) frequency, (c) amplitude, and (d) maximum speed of the glider? Part A - Express your answer using two significant figures. T = _________s Part B - Express your answer using two significant figures. f = _________Hz Part C - Express your answer using two significant figures. A = _________cm Part D - Express your answer using two significant figures. vmax = _________cm/s
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fm transmitter is producing 50 watts into a 50 antenna at a carrier frequency of 525.425 mhz. the deviation ( ) of the transmitter is 1.25 khz; in this service a maximum of 2.5 khz is allowed
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a 5 mw, adiabatic turbine takes steam at 5 mpa, 650 oc, and 80 m/s. the steam leaves at 50 kpa, 150 oc, and 140 m/s. find the isentropic efficiency of this turbine.
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what is the angle of refraction for an ultrasound beam incident at an angle of 15 degrees from muscle into bone?
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suppose the bipolar transsitor exhibits the following hypothetical charactersitic: and no early effect. computer the voltage gain for a bias current of 1 ma.
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Suppose you have a 9.2 cm diameter fire hose with a 3.4 cm diameter nozzle.A.) Calculate the pressure drop due to the Bernoulli effect as water enters the nozzle from the hose at the rate of 40.0 L/s. Take 1.00 103 kg/m3 for the density of the water.B.) To what maximum height, in meters, above the nozzle can this water rise? (The actual height will be significantly smaller due to air resistance.)
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what type of radiation would be most likely to escape through container walls
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if a water polo ball dropped from 40ft on planet euler takes 2 seconds to hit the ground, what is the gravity there
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A circus stilt walker stands balanced on one stilt he is in - unstable equilibrium - stable equilibrium- neutral equilibrium - universal equilibrium
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a block attached to a spring moves on a frictionless horizontal surface, back and forth between -3.0 m and 3.0 m. what is the direction of the spring force on the block when the block is at x = 0 m?
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what is the wavelength of visible light that has a frequency of 2.1 x 1014 hz? enter the result in nm (nanometers). you may round to the nearest integer.
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a certain satellite travels in an approximately circular orbit of radius 3.0 106 m with a period of 6 h 44 min. calculate the mass of its planet from this information.
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in the circuit of fig. p7.31, the nmos transistor has vt = 0.5 v and va = 50 v and operates with vd = 1 v. what is the voltage gain vo/vi ? what do vd and the gain become for i increased to 1 ma?
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a 200-pound (90.7 kg) man carries about how many pounds of water?
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Indicate the effect on the pressure (increases, decreases, or no change) of the following change. a. There is a decrease in volume (n; T constant): b. The volume and the Kelvin temperature are reduced by one-half (n constant): c. A leak occurs and gas escapes (V, T constant):
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a properly exposed photograph is taken at f/16 and 1100s. what lens opening is required if the shutter speed is 1400s?
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what energy is released in the - decay of 99mo, given its mass is 98.907711 u?
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A current I starts at z = -~ and flows up the z-axis as a linear filament until its hits an origin-centered sphere of radius R. The current spreads out uniformly over the surface of the sphere and flows up lines of longitude from the south pole to the north pole. The recombined current flows thereafter as a linear filament up the z-axis to z = +0. (a) Find the current density on the sphere. (b) Use explicitly stated symmetry arguments and Ampre's law in integral form to find the magnetic field at every point in space. (c) Check that your solution satisfies the magnetic field matching conditions at the surface of the sphere.
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Force F =13j^N is exerted on a particle at r =(3i^+5j^)m.What is the torque on the particle about the origin?
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a ping pong ball carries a negative charge of -2 uc ( (u = micro = 10^-6). does this ball have an excess or a defecit of electrons
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at what temperature is the following spontaneous? delta h -18kj
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a light and a heavy object have the same momentum find out the ratio of their kinetic energies. which one has a larger kinetic energy?
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The electric potential in a region of space as a function of position x is given by the equation V(x) = x2 + x - , where = 2V/m2, = 7V/m, and = 15V. All nonelectrical forces are negligible.An electron starts at rest at x = 0 and travels to x = 20 m.Calculate the magnitude of the work done on the electron by the electric field during this process.Calculate the speed of the electron at x = 20 m.Derive an equation for the x-component of the electric field as a function of position x.On the axes below, sketch a graph of the acceleration of the electron a as a function of position x.On the axes below, sketch a graph of the kinetic energy of the electron K as a function of position x.At which of the following locations will an electron that is released from rest move in the negative x direction? Check all that apply.____ x = -2 m ____x = +1 m ____x = +3 mJustify your answer.A charged object, generating its own electric field given by E(x) = 7 V/m, is introduced in the region. What is the potential difference from x = 0 m to x = 20 m caused by the combination of the original electrical potential and the electric field of the charged object?
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