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A wire bearing current of 1.25 A crosses a region in which there is a uniform B field in the +y direction. The wire is inclined at an angle of 75 degrees above the +x direction. What is the magnitude of the force on the wire, if the magnetic field region spans 15 cm in the x direction?
Select one:
a. 0.19 N
b. 0.70 N
c. 0.18 N
d. 0.05 N
A particular guitar string is supposed to vibrate at 214 Hz, but it is measured to actually vibrate at 272 Hz. By what percentage must the tension in string be changed to get the frequency to the accurate value.
Calculate the electric flux through the circle when its face is perpendicular to the field lines and then when at 45 degrees to the field lines
Where does an object need to be placed relative to a microscope for its 0.500 cm focal length objective to produce a magnification of -50
A 190 g ball moving at 0.45 m/s in the + x- direction is subject to a 0.15 N force in the - y- direction for 2.5 s. Find the magnitude of the ball's momentum change
The owner of a van installs a rear-window lens that has a focal length of -0.295m. Determine how tall is the man
Initially at a temperature of 87.0?C, 0.300m3 of air expands at a constant gauge pressure of 1.39×105Pa to a volume of 1.47m3, Compute the total work done by the air
question you wish to create an image that is 10 meters from an object. this image is to be inverted and half the height
The graph shows how the force component F cos along the displacement varies with the magnitude s of the displacement. Find the work done by theforce. (Hint: Recall how the area of a triangle is related tothe triangle's base and height.)
Two radio antennas are 120 m apart on a north-south line. The two antennas radiate in phase at a frequency of 5.6 MHz. At which destructive interference of the two radio waves occurs
Compute what speed must an electron have if its momentum is to be the same as that of an X-ray photon with a wavelength of 0.59 nanometer
An object is moving along the x axis. At t = 5.4 s, the object is at x = +3.0 m and has a velocity of +5.4 m/s. Find the average acceleration during the time interval 5.4 s ? t ? 8 s
A Carnot engine operates between reservoirs at 550K and 300K, discarding 1500 J of heat in each cycle. determine the engine's efficiency
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