In which direction is Earth precessing? Choose the best answer

a. towards Polaris b. towards Thuban
c. away from Polaris d. away from Sirius


a

Physics & Space Science

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The person who first explained the discrete hydrogen atom spectrum was __________

Fill in the blank(s) with correct word

Physics & Space Science

A 4.0-cm-tall object is placed 50.0 cm from a diverging lens having a focal length of magnitude 25.0 cm. What is the nature and location of the image?

A) a real image, 4.0 cm tall, 20 cm other side of the object B) a virtual image, 4.0 cm tall, 20 cm other side of the object C) a virtual image, 2.0 cm tall, 10 cm other side of the object D) a virtual image, 1.3 cm tall, 16.7 cm same side as the object E) a real image, 1.3 cm tall, 16.7 cm same side as the object

Physics & Space Science

There is as much mass in the voids between the stars as in the stars themselves

Indicate whether the statement is true or false

Physics & Space Science

Distinguish between heat and temperature. Compare definitions and units of measurements

Physics & Space Science