The combined mass of all of the asteroids is probably less than 1/1,000 the mass of Earth.
Answer the following statement true (T) or false (F)
True
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A segment of wire carries a current of 25 A along the x axis from x = ?2.0 m to x = 0 and then along the z axis from z = 0 to z = 3.0m. In this region of space, the magnetic field is equal to 40 mT in the positive z direction. What is the magnitude of the force on this segment of wire?
a. 1.0 N b. 5.0 N c. 2.0 N d. 3.6 N e. 3.0 N
The period-luminosity relation for Cepheid and RR Lyrae variable stars can be used for ______________
Fill in the blank(s) with correct word
According to our theory of solar system formation, why does the Sun rotate slowly today?
A) The Sun once rotated much faster, but it transferred angular momentum to charged particles caught in its magnetic field and then blew the particles away with its strong solar wind. B) The Sun once rotated much faster, but it transferred angular momentum to the planets during the parts of their orbits where they come closest to the Sun. C) The Sun once rotated much faster, but it lost angular momentum due to internal friction. D) The Sun once rotated much faster, but it lost angular momentum because everything slows down with time. E) The Sun was born rotating slowly because the solar nebula had very little angular momentum.
Series/Parallel Circuits: A portion of a circuit is shown in the figure, and the batteries are ideal. What is the potential difference VA - VB if I = 5.0 A?
A. 63 V B. 35 V C. 55 V D. 45 V E. 71 V