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A beam of neutrons that all have the same energy scatters from the atoms that have a spacing of 9.30×10^?2nm in the surface plane of a crystal
A physics student has designed a winter game. He has a platform 4.6 meters high with a rope tied to a tree at the same height, how fast are the boys and the sled moving after they "collide"
The coil in a 60-Hz ac generator has 125 turns, each having an area of 3.0*10^-2 m^2, What is the RMS output voltage
The component prisms are 70-20-90 degrees. the angle between the emerging right and left polarized rays
A transformer takes 120V (RMS) from a household circuit and drops it to supply a secondary circuit at 8V (RMS) to power a dorbell at 3.75A (RMS). What is the peak current in the primary coil of the
One object is at rest, and another is moving. The two collide in a one-dimensional, completely inelastic collision. when the small-mass object is the one moving initially
A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 790-kg car traveling with a velocity of +2.15 m/s. What is the final velocity of each vehicle?
A person scffing her feet on a wool rug on a dry day accumulates a net charge of -95uC. How many excess elecvtrons does she get
You have a compound microscope with a barrel of length 161 mm. Find the total angular magnification of the microscope for a person whose near point is 25.0 cm away
A block of wood with volume V floats in water with 0.68V submerged. determine the density of the oil and wood
In a certain binary-star system, each star has the a mass of 1.00 multiply.gif 10^30 kg, What is their period of revolution in Earth years
A circular coil (500 turns, radius=.195m) is rotating in a uniform magnetic field. At t=0 s. Find the magnitude of the magnetic field at the location of the coil
Suppose that potons are fired towards the large flat side of a positively charged conducting plate, How long does it take for the protons to hit the plate
A series RLC circuit has components with R = 50ohms, L = 0.15H, C = 20uF. The circuit is driven by a 120-V, 60-Hz source. What is the power delivered to the circuit
A particle with charge 94.5 nC is moving in the region where there is a uniform magnetic field of magnitude 0.45 T pointing in the negative x-direction. What is the magnetic field vector in vector n
A physicist\'s left eye is myopic (i.e., nearsighted). This eye can see clearly only out to a distance of 21 cm. what is the power in Diopters
The "literature" refers to books, journal articles, magazine and newspaper articles, company records and documents, and even personal interviews with knowledgeable industry conflict resolution exper
A balloon is filled with helium at a pressure of 2.4 x 10^5 Pa. The balloon is at a temperature of 18 degrees Celsius, How many helium atoms are contained in the balloon
Using a 673-nm wavelength laser, you form the diffraction pattern of a 0.109-mm wide slit on a screen. How far is the screen located from the slit
A conducting slab (think of a large flat sheet of metal) is large compared to the size of individual particles and molecules, Where does the excess charge reside
A 10.0-ohms resistor, a 10.0-mh inductor, and a 100 uF capacitor are connected in series to 50.0-V (rms) having variable frequency. find the energy delivered to the circuit during one period
A simple harmonic oscillator takes 17 seconds to undergo 17 complete oscillations. What is the frequency of the oscillator
A heavy ball with a weight of 100N (m= 10.2 kg) is hung from the ceiling of a lecture hall on a 4.5-m-long rope. What is the tension in the rope at that point
A power transmission line 50km long has a total resistance of 0.60 ohms. What percentage of the original energy is lost when the transformer is used
An ideal transformer steps down 120V to 12V and the 2630 turn secondary supplies 12 A. What is the ratio of output power to input power