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Solve the following question given below:
Question: A crystal of NaI has a density of 2.17 g/cm3. What is the atom density of sodium in the crystal?
Any help I can get on this question is greatly appreciated! I'm not too familiar with this problem.
A spherical steel ball bearing has a diameter of 2.540 cm at 26.00°C. (Assume the coefficient of linear expansion of the steel is 1.10 10-5(°C?1), and the average volume expansion coefficient is 3.30 10-5(°C?1).)
A contact lens is made of plastic with an index of refraction of 1.60. The lens has an outer radius of curvature of +2.10 cm and an inner radius of curvature of +2.58 cm. What is the focal length of the lens
A 5.00 g bullet traveling horizontally at 460 m/s is shot through a 2.00 kg wood block suspended on a string 3.00 m long. find the speed of the bullet as it emerges from the block
Monochromatic light falls on two very narrow slits 0.045mm apart. Successive fringes on a screen 6.70m away are 8.9cm apart near the center of the pattern. Determine the wavelength of the light
A 2120 kg car moving east at 10.7 m/s collides with a 3240 kg car moving east. The cars stick together and move east as a unit after the collision at a velocity of 6.48 m/s.
A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 84 rad/s. The wheel is run at that angular velocity for 37 s and then power is shu..
When the wavelength of an incident radiation exceeds 560nm the emission of photoelectrons from a surface ceases. What is the stopping potential for this electrons
A fire house 4.0cm in diameter is capable of spraying water at a velocity of 10 m/s. For a continuous horizontal flow of water, what horizontal force should a fireman exert on the hose to keep it stationary
A baseball player hits a home run into the right field upper deck. The ball lands in a row that is 140 horizontally from home plate and 30.0 above the playing field. Determine the ball's average velocity components
A bottle has a mass of 35.00 g when empty and 98.44 g when filled with water. When filled with another fluid, the mass is 88.78 g. What is the specific gravity of this other fluid
A 1.94-cm-high object is placed 23.8 cm in front of a concave mirror with a 5.84-cm focal length. What is the position of the image
Deimos, a moon of Mars, is about 12 km in diameter, with a mass of 2.0×1015 kg. Suppose you are stranded alone on Deimos, With what speed would you have to throw a baseball
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