The _______________ predicts that pairs of sunspots should occur where magnetic tubes burst through the Sun's surface

Fill in the blank(s) with correct word


Babcock model

Physics & Space Science

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An astronaut floating alone in outer space throws a baseball. If the ball moves away at 20 m/s, the astronaut will move in the opposite direction at

A) 20 m/s. B) a lower speed. C) a higher speed. D) more information needed E) none of the above

Physics & Space Science

Magnetic Field of a Long Wire: A wire lying in the plane of this page carries a current directly toward the top of the page. What is the direction of the magnetic force this current produces on an electron that is moving perpendicular to the page and outward from it on the left side of the wire?

A. perpendicular to the page and towards you B. perpendicular to the page and away from you C. toward the top of the page D. toward the bottom of the page E. The force is zero.

Physics & Space Science

Which of the following statements about ozone (in Earth's stratosphere) is not true?

A) The presence of ozone was crucial to the origin of life some 4 billion years ago. B) Ozone is a form of oxygen. C) Ozone absorbs harmful ultraviolet light from the Sun. D) Without this ozone, Earth would not have a stratosphere.

Physics & Space Science

A rectangular loop of wire of width 10 cm and length 20 cm has a current of 2.5 A flowing through it

Two sides of the loop are oriented parallel to a uniform magnetic field of strength 0.037 T, the other two sides being perpendicular to the magnetic field. The magnitude of the torque on the loop is A) 0.0093 m?N. B) 0.025 m?N. C) 0.050 m?N. D) 0.0019 m?N. E) 0.038 m?N.

Physics & Space Science