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Light travels at a speed of 1.947 × 108 m/s in a certain substance. What is the index of refraction of this substance? Use 2.998 × 108 m/s for the speed of light in a vacuum.
What is the rms speed of nitrogen molecules at a temperature of 55 oC? The mass of a nitrogen molecule is 4.680×10-26 kg
What is the ratio of the amplitude of the damped oscillation
A 200 g calorimeter contain 500 g of water at 21 degree Celsius. A 100g of ice at -20 degree Celsius is placed into the calorimeter. find the specific heat of the material of the calorimeter
A lamp which is 12.0 cm tall is 286.8 cm in front of a converging lens which has a focal length of 77.5 cm. What is the image distance for this lamp
A 0.29 F capacitor is desired. What area must the plates have if they are to be separated by a 3.7 mm air gap
A particle with mass 1.81×10?3kg and a charge of 1.22×10?8C has, at a given instant, a velocity v? =(3.00×104m/s)j^, Find the acceleration vector for the charge
A sheet of glass is coated with a 496 nm thick layer of oil (n = 1.42). What is the color of the most part of transmitted light
Two 2.0 cm x 2.0 cm square electrodes, spaced 0.4 mm apart, are connected to a 10 V battery. What is the charge on each electrode
A mass of 0.5 kg is suspended from a spring, which stretches by 8 cm. At what frequehcy would you expect resonant behavior
An astronomer on earth observes two galaxies moving away from each other along a line that passes through the earth. At what speed are the galaxies moving apart relative to each other?
What phase difference between two otherwise identical travelling waves, moving in the similar direction along a stretched string.
Using a 677-nm wavelength laser, you form the diffraction pattern of a 0.113-mm wide slit on a screen. How far is the screen located from the slit
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