A laser beam is incident from the air at an angle of 30.00° to the vertical onto a solution of Karo syrup in water. If the beam is refracted to 19.24° to the vertical, what is the index of refraction of the syrup solution?
1.517
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Changes in the predicted motion of Uranus led to the search for an eighth planet
Indicate whether the statement is true or false
An air-track cart is attached to a spring and completes one oscillation every 5.67 s in simple harmonic motion
At time t = 0.00 s the cart is released at the position x = +0.250 m. What is the position of the cart when t = 29.6 s? A) x = 0.0461 m B) x = 0.210 m C) x = 0.218 m D) x = 0.342 m E) x = -0.218 m
Why is calcium fluoride, CaImage, a high melting point crystalline solid while stannic chloride, Image, is a volatile liquid?
A) There is no theory to predict the physical property of melting point. Melting point temperatures are empirically determined. B) Actually, we would predict these results to be the opposite. Since each metal is combined with a group 17 halogen, the heavier metal (tin) combination should have the higher melting point. C) CaImage is a small, linear, non-polar molecule, while Image is a huge tetrahedral structure. Therefore the bonds in calcium fluoride tend to give it a higher melting point temperature. D) Ionic compounds formed by elements on opposite sides of the periodic table, like Image, tend to have higher melting points than more covalently bonded structures, like Image.
An object is placed on an optical bench. A lens with a focal length of 12 cm is placed 20 cm from the object. Where should a second lens, with a focal length of 4.0 cm, be placed if a total magnification +6 is to be obtained?
A) 20 cm from the first lens B) 35 cm from the first lens C) 40 cm from the first lens D) 30 cm from the first lens E) 25 cm from the first lens