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The density of matter in interstellar space is approx. one electron and one proton per cubic centimetre. What is the limit on the frequency of electromagnetic radiation that can be propagated during such a medium with minimal attenuation?
When B-10 is bombarded by neutrons, a neutron can be absorbedand an alpha particle emitted. If the B-10 target isstationary the kinetic energy of the reaction products is equal to Kinetic energy of incident neutron
At a rock concert, a dB meter registered 130 dB when placed at a2.8 m in front of a loudspeaker on the stage. (a) what was thepower output of the speaker assuming uniform spherical ofthe sound and neglecting absorption in the air?(b) how far awaywoul..
An electrical cable consists of 184 strands of fine wire, each having 3.47 µ? resistance. What is the resistance of the cable
The ground state total energy, total entropy, and temperature are 5.00 Btu, 0.11690 Btu/R, and 50.0°F, respectively. If the total entropy of the cell must be ten times its ground state value,
If a violin string vibrates at 440 Hz as its fundamental frequency, what are the frequencies of the first four harmonics
An explosion breaks an object initially at rest into two pieces, one of which has 2.2 times the mass of the other. obtain how much kinetic energy did the heavier piece get
a bullet moving horizontally to the right (+x direction) with a speed of 500 m/s strikes a sandbagk, What is the average acceleration in m/s of the bullet
If the electric field in an EM wave has a peak value of 0.45X10^-4 V/m, what is the peak value of the magnetic field strength
The specifications associated with a commercial spectrophotometer are: Diffraction grating with 600 groves per mm. Focal length,f, 370mm. Blaze angle, first order, 500 nm. What is the reciprocal of the linear dispersion? could the two emission lines ..
The oxygen molecule (O2)may be regarded as two massesconnected by a spring. In vibrational motion, each oxygen atomalternately approaches, then moves away from the center of mass ofthe system.
A rectangular block of copper has sides of length 12 cm, 22 cm, and45 cm. what are the currents thatthe block can carry
A closed ended manometer is used to measure the pressure in a tank of gas. what is the gauge pressure (in Pa) in the tank
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