Gas in a constant-volume gas thermometer registers a pressure of 75.0 kPa at 0°C. Assuming ideal behavior, what is the pressure of this gas at 200°C?
A) 120 kPa
B) 130 kPa
C) 140 kPa
D) 150 kPa
E) 160 kPa
B
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Charge of uniform density (80 nC/m3) is distributed throughout a hollow cylindrical region formed by two coaxial cylindrical surfaces of radii 1.0 mm and 3.0 mm. Determine the magnitude of the electric field at a point which is 2.0 mm from the symmetry axis
a. 7.9 N/C b. 9.0 N/C c. 5.9 N/C d. 6.8 N/C e. 18 N/C
Why do we see a gravitational redshift in the spectrum of the Sun?
A) Gravity makes light heavy, causing it to appear redder. B) Because of gravity, the Sun is always moving away from us, so we see a redshift. C) Time runs slower on the Sun than on Earth, making lines in the solar spectrum have lower frequency and hence longer wavelength than normal. D) Spacetime curvature allows red photons of light to escape the Sun more easily than blue photons, leading to an apparent redshift.
A car enters a level, unbanked semi-circular hairpin turn of 300 m radius at a speed of 40 m/s. The coefficient of friction between the tires and the road is ? = 0.25 . If the car maintains a constant speed of 40 m/s, it will
a. attempt to dig into the road surface. b. tend to veer toward the center of the semicircle. c. arrive safely at the end of the semicircle. d. tend to veer toward the outside of the circle. e. veer toward the center for the first quarter-circle, then veer toward the outside for the second quarter-circle.
A mixture of red and green pigments appears
A) orange. B) yellow. C) magenta. D) blue. E) muddy-brown.