The number of _______________ visible on the Sun varies in a cycle with a period of 11 years
Fill in the blank(s) with correct word
sunspots
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13.0 g of water in a 3.25-L pressure vessel is heated to 480°C. What is the pressure inside the container? (R = 0.082 L/atm/mol/K, one mole of water has a mass of 18 grams)
a. 24.7 atm b. 13.7 atm c. 8.75 atm d. 15.7 atm e. 19.8 atm
Which of the following is NOT true about adding animations to your website?
A. You can purchase ready-to-use animated elements from Animation Factory. B. Restrictions on usage for animated elements vary. C. Some animations place restrictions on use in commercial websites. D. When using an open format animation, screen readers and adaptive devices still may require a plug-in.
A truck, initially at rest, rolls down a frictionless hill and attains a speed of 20 m/s at the bottom. To achieve a speed of 40 m/s at the bottom, how many times higher must the hill be?
A. half the height B. the same height C. 12 times the height D. twice the height E. four times the height
In the lab, a relativistic proton has a momentum of 1.00 × 10-19 kg ? m/s and a rest energy of 0.150 nJ. What is the speed of the proton in the lab? (c = 3.00 × 108 m/s, mproton = 1.67 × 10-27 kg)
A) 0.170c B) 0.196c C) 0.911c D) 0.930c E) 0.951c