Charge of uniform density 4.0 nC/m is distributed along the x axis from x = -2.0 m to x = +3.0 m. What is the magnitude of the electric field at the point x = +5.0 m on the x axis?
a. 16 N/C
b. 13 N/C
c. 19 N/C
d. 26 N/C
e. 5.0 N/C
B
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A satellite is in a circular orbit about the Earth at an altitude at which air resistance is negligible. Which of the following statements is true?
A. There is only one force acting on the satellite. B. There are two forces acting on the satellite, and their resultant is zero. C. There are two forces acting on the satellite, and their resultant is not zero. D. There are three forces acting on the satellite. E. None of the preceding statements are correct.
To melt 50 g of 0°C ice requires
A) 25 calories. B) 50 calories. C) 80 calories. D) none of the above
What combination of forces releases the gas and dust of a comet when it approaches the Sun?
a. radiation pressure and electromagnetic energy b. electromagnetic energy and solar wind c. solar flares and nuclear fission d. gravitational energy and solar wind e. solar wind and radiation pressure
In a diffraction experiment, light of 600 nm wavelength produces a first-order maximum 0.350 mm from the central maximum on a distant screen
A second monochromatic source produces a third-order maximum 0.870 mm from the central maximum when it passes through the same diffraction grating. What is the wavelength of the light from the second source? A) 479 nm B) 497 nm C) 567 nm D) 749 nm E) 794 nm