PLEASE SOLVE THE FOLLOWING CHECK IF 12 IS CORRECT IF ITS NOT PLEASE CORRECT IT T

Question

PLEASE SOLVE THE FOLLOWING

CHECK IF 12 IS CORRECT IF ITS NOT PLEASE CORRECT IT

The angular speed of the minute hand of a clock is pi/7200 rad/s pi/3600 rad/s pi/1800 rad/s pi/60 rad/s pi/30 rad/s None are correct. A spy satellite is in circular orbit around the Earth at an altitude of 500 km above ground. What is the satellite's orbital speed, if it makes one revolution every 90 min? (You might want to know that the radius of the Earth is approximately 6400 km). 2 km/s 1 Km/s 8 km/s 4 km/s 16 km/s A stone is thrown up in the air and it reaches a maximum height of 10.0 m. What is the initial speed of the stone? 10.0 m/s 14.0 m/s 20.0 m/s 19.0 m/s 12.0 m/s

Explanation / Answer

2. pi/1800

10. 4 km/s

12. 14 m/s

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