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The speed of sound at 0oC is 331 m/s. At another temperature, the speed of sound is measured to be 343 m/s. Evaluate what is this temperature?
A cyclotron used to accelerate an alpha particle (m=6.65 x 10-27 kg q= 3.2 X 10-19 C) has a radius of .50 m and a magnetic field of 1.8 T. what is the force that acts on the alpha particle
The focal length of a simple magnifier is 7.60 cm. Assume the magnifier to be a thin lens placed very close to the eye. what is the height of its image formed by the magnifier
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
a flint glass plate n 1.66 rests on the bottom of an aquarium tank. the plate is 5.50 cm thick vertical dimension and
A 150 g aluminum cup contains 150 g of water and both are at 13 C. If you add 150 g of hot water at 90 C what is the final temperature at thermal equilibrium? How much hot water at 90 C needs to be added to achieve a final temperature of 44 C?
A proton initially has a v = 4.0i-2.0j+3.0k and then 4 sec later has a v (Vector) = -2.0i - 2.0j+5.0 k (in m/s). For that 4.0 second, Determine the protons average acceleration
a high-voltage copper transmission line with a diameter of 1.40 cm and a length of 300 km carries a steady current of
how much energy in j is dissipated as heat during a 2 minute time interval by a 1.5 kilo ohm resistor that has a
A light ray is incident (from air with n = 1) on a material with n = 1.5 as shown in the diagram below. Here ? = 38°. What is the angle of refraction in the material
A cube of side 15 cm floats at the surface between waterand oil. The oil has a density of 810 kg/m3. what is the buoyant force on the cube
A 2.8-kg piece of aluminum at 28.5 degrees celsius is placed in 1.0 kg of water in a Styrofoam container at room temperature (20 degrees celsius)
A beam of light passes through a polarizer and then an analyzer. find the angle between the axes of the polarizer and the analyzer
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