Notice the numbered points on this photo of the Gemini North reflecting telescope. Where is the secondary mirror located?
A) Point 1
B) Point 2
C) Point 3
D) Point 4
C) Point 3
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A person approaches a plane mirror at a speed of 3 m/s. How fast does he approach his image?
A) 3 m/s B) 4 m/s C) 5 m/s D) 6 m/s E) 7 m/s
The speed of a particle moving in a circle 2.0 m in radius increases at the constant rate of 4.4 m/s2 . At an instant when the magnitude of the total acceleration is 6.0 m/s2, what is the speed of the particle?
a. 3.9 m/s b. 2.9 m/s c. 3.5 m/s d. 3.0 m/s e. 1.4 m/s
A spaceship moving past the Earth with a speed of 0.800c signals to the Earth with pulsed laser photons emitted at 10.0-second intervals according to the spaceship's clock. According to observers on Earth who see the flashes, the time interval they measure is
a. 13.4 s b. 16.7 s c. 12.5 s d. 9.70 s e. 6.03 s
How is the greenhouse effect on Venus different to the same effect on Earth?
What will be an ideal response?