If a star has an extrasolar planet, the shape of its radial velocity curve is related to the planet's
A) orbital eccentricity
B) mass
C) radius
D) orbital period
A
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You are asked to design a coil to operate in air that will produce a flux density of 0.01T. The maximum current for the coil wire is 1 A, and the space available for the coil limits the length to 1 cm. How many loops are required for this coil? Round your answer to the nearest whole number.
What will be an ideal response?
In its simplest form, the theory of Terrestrial protoplanet growth supposes that:
A) all the planetesimals in each orbital zone had about the same gravitational pull. B) all the planetesimals in each orbital zone had about the same chemical composition. C) all the planets formed in rotating disks of gas and dust around young stars. D) all the planets of our Solar System formed as the Sun condensed from the interstellar medium.
The loop’s front end has emerged from the field.
A. Current flows clockwise in the loop. B. Current flows counterclockwise in the loop. C. Current does not flow in the loop.
In what ways is Earth different from the other terrestrial planets?
A) Most of its surface is covered with liquid water. B) It has oxygen in its atmosphere. C) Its lithosphere is broken into plates that move around. D) Life can be found almost everywhere. E) All of the above are true.