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In a small town there are only two AM radio stations, one at 930 kHz and one at 1280 kHz.
What is the wavelength of the radio wave transmitted by the first station?
What is the wavelength of the radio wave transmitted by the second station?
A positive lens of focal length 40 cm is placed 20 cm behind a negative lens of focal length -80 cm. The final image distance relative to the positive lens is:
A sinusoidal electromagnetic wave having a magnetic field of amplitude 1.05 and a wavelength of 442 is traveling in the direction through empty space. What is the amplitude of the associated electric field
calculate and compare the electron densities of a piece of aluminum 1 cm thick and a piece of iron of the same density
a toy balloon is filled with helium gas he at 1atm at 18 degrees c. if the volume of the balloon is 0.023m3 how many
An earth satellite moves in a circular orbit with an orbital speed of 6100. Find the radial acceleration of the satellite in its orbit
A ball of mass 0.40 kg moving at 180 m/s east strikes a second ball, initially at rest of mass 0.500 kg. What is the final velocity of the second ball
A pebble is released from rest at a certain height and falls freely, reaching an impact speed of 2 m/s at the floor. What is its speed at the floor
chlorine has two stable isotopes 35cl and 37cl. chlorine gas which consists of singly ionized ions is to be separated
Find the center of mass of a system composed of three spherical objects with masses of 3.4kg , 2.3kg , and 4.2kg and centers located at (-6.2m , 0), (2.0m , 0), and (2.8m , 0), respectively.
Compute the value that the spring constant should have so that passengers undergo an acceleration of no more than 7.0 when brought to rest. Let be the total mass of the elevator and passengers.
An object is placed 40cm in front of a concave mirror whose radius of curvature is 30am. Determine the location of the image and the magnification
Two ships are moving along a line due east. The trailing vessel has a speed of 62.0 km/h relative to a land-based observation point, What frequency is monitored by the leading ship
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