In general, the brightest star in a given constellation is designated as alpha

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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A galvanometer calibrated to read potential difference is

A) an ammeter. B) a voltmeter. C) an ohm meter. D) none of the above

Physics & Space Science

The apparent brightness of an object is calculated as: . If one knew the luminosity and apparent brightness of a star that was too distant for a parallax measurement, what would be the best approach to determining its distance?

A) Insert the values for luminosity and apparent brightness into the equation, then guess the value for the distance that satisfies the equation. B) Solve the equation for distance, then insert the values for luminosity and apparent brightness into the new equation. C) The distance cannot be determined.

Physics & Space Science

A square and a circular loop with the same area lie in the xy-plane, where there is a uniform magnetic field pointing at some angle q with respect to the positive z-direction. Each loop carries the same current, in the same direction. Which magnetic torque is larger?

1.the torque on the square loop 2.the torque on the circular loop 3.the torques are the same 4.more information is needed

Physics & Space Science

Regions of compression that move at their own speed in the disk and are outlined by the spiral arms are _____________

Fill in the blank(s) with correct word

Physics & Space Science