Kepler's first law is about planets orbiting a host star in the shape of an ellipse with the host star at the center of the ellipse
a. True
b. False
Indicate whether the statement is true or false
False
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These diagrams show a raisin cake before it is put in the oven and again one hour later after it has expanded during baking. Suppose you lived in Raisin 3 (the raisin labeled "3"). What would you have noticed about Raisin 2 during baking?
A) Raisin 2 is moving away from you at a speed of 4 cm/hr. B) Raisin 2 always stays in the same place but gets bigger in size. C) Raisin 2 is moving away from you at a speed of 2 cm/hr. D) Raisin 2 is moving away from you at a speed of 6 cm/hr. E) Raisin 2 is moving toward you at a speed of 2 cm/hr.
A drawing is placed 40 cm in front of a thin lens. If a virtual image forms at a distance of 50 cm from the lens, on the same side as the drawing, what is the focal length of the lens?
A) -45 cm B) 75 cm C) 90 cm D) 200 cm
Which large jovian moon is thought to have been captured into its present orbit?
A) Triton B) Callisto C) Titan D) Io
Determine the change in length of a 20-m railroad track made of steel if the temperature is changed from -15°C to +35°C. (aSTEEL = 1.1 × 10^-5/°C)