Jennifer bought a 7 x 25 pair of binoculars for observing baseball. The 25 describes the
A) aperture in cm.
B) aperture in mm.
C) f/number.
D) magnification.
E) .
B
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A baseball player is running to second base at 5.03 m/s. When he is 4.80 m from the plate he goes into a slide. The coefficient of kinetic friction between the player and the ground is 0.180. What is his speed when he reaches the plate?
A) 4.47 m/s B) 2.89 m/s C) 1.96 m/s D) 2.56 m/s E) He stops before reaching the plate.
Which of the following is not evidence for plate tectonics on Earth?
A) Some continental boundaries fit together like pieces of a jigsaw puzzle. B) Similar rocks and fossils are found in different continents. C) high ocean ridges between the continents D) the existence of volcanoes E) earthquakes
Heat is added to a 2.0 kg piece of ice at a rate of How long will it take for the ice to melt if it was initially at 0.00°C? (The latent heat of fusion for water is 334 kJ/kg and its latent heat of vaporization is 2260 kJ/kg.)
A) 0.84 s B) 530,000 s C) 4.7 s D) 670 s
If I = 0.40 A in the circuit segment shown below, what is the potential difference Va?Vb?
A. 31 V B. 28 V C. 25 V D. 34 V E. 10 V