Which of the following is a general characteristic of the four jovian planets in our solar system?
A) They are significantly lower in average density than are the terrestrial planets.
B) They have very high levels of volcanic and tectonic activity.
C) They are made predominantly of elements heavier than hydrogen and helium.
D) They rotate more slowly than the terrestrial planets.
A) They are significantly lower in average density than are the terrestrial planets.
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Lens-Maker Formula: As part of a piece of optical apparatus to be used in air, you need to design a thin lens having faces with radii of curvature of magnitude 24 cm each. When an object 32 mm tall is placed 30 cm from this lens, it must form a real image 60 cm from the lens.(a) What must be the index of refraction of the lens material?(b) What is the height of the image of the object? Is it upright or inverted; is it real or virtual?
What will be an ideal response?
Johnny throws a shotput at an angle of 45.° and it travels a horizontal distance of 30. meters. If he releases the shotput at the same speed but changes the angle to 55.°, what will be the new range (distance)?
A) 25. m B) 28. m C) 41. m D) 32. m E) 37. m
In a double-slit experiment, the distance between the slits is 0.2 mm, and the distance to the screen is 150 cm. What wavelength (in nm) is needed to have the intensity at a point 1 mm from the central maximum on the screen be 80% of the maximum intensity?
A. 900 B. 700 C. 500 D. 300 E. 600
A pair of narrow slits that are 1.8 mm apart is illuminated by a monochromatic coherent light source. A fringe pattern is observed on a screen 4.8 m from the slits
If there are 5.0 bright fringes/cm on the screen, what is the wavelength of the monochromatic light? A) 550 nm B) 600 nm C) 650 nm D) 700 nm E) 750 nm