An object is 12 cm in front of a concave spherical mirror, and the image is 3.0 cm in front of the mirror. What is the focal length of the mirror?
A) 0.25 cm
B) 15 cm
C) 4.0 cm
D) 2.4 cm
E) 1.3 cm
Answer: D
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The Greenland ice sheet can be one km thick. Estimate the pressure underneath the ice where it is 0.80 km deep. (The density of ice is 918 kg/m3.)
a. 9.0 × 10^5 Pa (9 atm) c. 7.2 × 10^6 Pa (72 atm) b. 2.5 × 10^6 Pa (25 atm) d. 9.0 × 10^6 Pa (90 atm)
When a rigid body rotates about a fixed axis all the points in the body have the same tangential speed
Indicate whether the statement is true or false
Which is a characteristic of Jovian planets when compared to Terrestrial planets?
a. Jovian planets are much larger than Terrestrial planets b. Jovian planets have rocky surfaces c. Jovian planets have no differentiation like Terrestrial planets d. Jovian planets have moons, unlike the Terrestrial planets e. Jovian planets have warmer atmospheres than Terrestrial planets.
A 2000 kg car is traveling on a banked curved icy road without sliding. The velocity of the car is 30 m/s and the road is banked at an angle of 20.0 degrees. The radius of curvature of the road is
A. 175 m. B. 204 m. C. 252 m. D. 302 m. E. 375 m.