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Two containers hold the same gas. If the average kinetic energy in one container is 9 x 10-21J, and in the second container is 2 x 10-21 J, what is the ratio of the Kelvin temperature of the higher KE gas to that of the lower KE gas?
The number of turns in the primary and the secondary of a step-up transformer are 93 and 439 respectively. what is the output voltage of this transformer
A thin film of MgF_2 (n= 1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500 nm and 625 nm
An 840 kg roller coaster is launched from a giant springof constant k = 31,000 N/m on a frictionless loop-the-loop track ofradius 6.2 m. Calculate the minimum compression of the spring
work of 600 j is done by stirring and insulated beaker containing 100 gm of water?what is the internal enery of the
A concave spherical mirror has a radius of curvature of 1.3 meter. Evaluate what is the focal length of the mirror
When the temperature of a metal cylinder is raised from 0.0°C to 113°C, its length increases by 0.26%. Find the percent change in density
Two capacitors have the same plate separation, but one has square plates and the other has circular plates, at is the dielectric constant kcircular of the material between the circular plate
The measurement of the energy of a photon requires a timeinterval of 3.6 x 10-8 sec. What is the smallest uncertainty in the photon's energy
A skier of mass 68.4 kg glides down a hill of slope 26.5o at constant speed. If she travels a distance 35.0m down the hill, What is the work done by friction
When a pitcher throws a curve ball, the ball is given a fairly rapid spin. Determine how much of its kinetic energy is rotational energy
a bathyshpere dives to a depth of 1000 m in the ocean. if the inside is maintained at one atmosphere, what is the net force acting on the round window
An organ pipe is 1.46 meter long. Find the first harmonic frequency of this pipe when it is closed at one end
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