To keep a telescope fixed on a stellar target over time as Earth rotates, the telescope must have a/an _____________________

Fill in the blank(s) with correct word


sidereal drive

Physics & Space Science

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Name the layers of the Earth's atmosphere, going up from the surface

What will be an ideal response?

Physics & Space Science

Power: A battery is rated at 12 V and 160 A-h. How much energy does this battery store?

A. 1.9 kJ B. 6.0 kJ C. 1.9 MJ D. 6.9 MJ

Physics & Space Science

Which wavelength band uses observatories on aircraft?

a. ultraviolet b. visual c. infrared d. X-ray

Physics & Space Science

A 120 N traffic light is located at the midpoint of a cable between two poles. The cable makes and angle of 30to the horizontal at each pole. What is the tension in the cable?

A. 60.0 N B. 90.0 N C. 140 N D. 110 N E. 120 N

Physics & Space Science