Constant Angular Acceleration: A turntable 45 cm in diameter starts from rest and makes its first complete revolution in 3.4 s with constant angular acceleration. If it maintains the same acceleration, how long will it take the turntable to make its second complete revolution?
Fill in the blank(s) with the appropriate word(s).
1.4 s
Physics & Space Science
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Earth's axis is tilted at an angle of _______________ degrees
Fill in the blank(s) with correct word
Physics & Space Science
Shake an object to and fro if you want to judge its
A) mass. B) weight. C) both the same D) none of the above
Physics & Space Science
A laser beam takes 24 ms to travel from a rocket to the reflective surface of a planet and back to the rocket. How far is the rocket from this planet's surface? (c = 3.0 × 108 m/s)
A) 1800 km B) 1200 km C) 3600 km D) 4800 km E) 2400 km
Physics & Space Science
As you ascend in elevation, the air generally becomes
A) warm and heavy. B) warm and less dense. C) cool and heavy. D) cool and less dense.
Physics & Space Science