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H-F molecule has spring constant of 970 N/m. Assume that an H-F chemical laser, which lases betwee vibrational states of the H-F molecule, changes it's vibrational quantum number by one as it emits it's coherent beam. If the laser has a continuous power output of 12.0 kW, how many photons per seconde does it emit?
A fire hose held near the ground shoots water at a speed of 6.2 m/s.At what angle(s) should the nozzle point in order that the water would land 2.5 m away.
A helium-neon laser (wavelength=666 nm) illuminates a single slit and is observed on a screen 1.5 m behind the slit. What is the width (in mm) of the slit
One of the weapons considered for the "Star Wars" antimissile system is a laser that could destroy ballistic missiles. When a high-power laser is used in the Earth's atmosphere, the electric field can ionize the air, turning it into a conducting p..
A spherical silver ball of radius 1 foot is set on a concrete pedestal as a lawn ornament. How big is the reflection of the hummingbird
Calculate the percentage of light that goes through the polarizer-analyzer pair in terms of the incident light intensity
A proton is shot at 5 × 107 m/s toward a gold atom, with a mass 197 times that of the proton, What is the recoil speed of the gold nucleus
A boat moves 15 .0 km across a lake in 30.0 min. What is the average speed of the boat in kilometers per hour
The force has magnitude 5.4 N and is directed at a counterclockwise angle of 103° from the positive direction of the x axis. How much work is done by the force on the coin during the displacement
How much energy is stored by the electric field between two square plates, 6.0cm on a side, separated by a 1.0mm air gap
A 2200 kg sport utility vehicle travelling at 86 km/h can be stopped in 0.15 s if it hits a concrete wall. Presume a 60 kg person was in the car that hit this wall. The velocity of the person equals that of car both before and after the crash, and..
Does the growth of a plant or animal violate the second low.
a TeflonTM-filled parallel-plate capacitor having a plate area of 200 cm2 and insulation thickness of 0.0400 mm, find the maximum voltage that can be applied to this capacitor
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