7. Borg ships are cubical. A Borg ship is approaching earth. According to an observer on earth, the Borg ship is 1000 m high, 1000 m wide, and has a depth of 100 m. Earth launches a photon torpedo to destroy the Borg ship. The torpedo is launched from earth with a velocity of 0.95c. The torpedo was set on earth to go off in 2 hr. Earth 0.95 c 100 m 1000 m a) With what velocity is the Borg ship approaching earth? b) What is the speed of the torpedo as measured by an observer on the Borg ship? c) According to an observer on the Borg ship, how long will it take the torpedo to explode?

7. Borg ships are cubical. A Borg ship is approaching earth. According to an observer on earth, the Borg ship is 1000 m high, 1000 m wide, and has a depth of 100 m. Earth launches a photon torpedo to destroy the Borg ship. The torpedo is launched from earth with a velocity of 0.95c. The torpedo was set on earth to go off in 2 hr. Earth 0.95 c 100 m 1000 m a) With what velocity is the Borg ship approaching earth? b) What is the speed of the torpedo as measured by an observer on the Borg ship? c) According to an observer on the Borg ship, how long will it take the torpedo to explode?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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9. An astronomer on earth observes two spacecraft moving away from each other along an axis that passes through the earth. The astronomer measures the speed of each spacecraft to be 0.875c relative to the earth. At what speed are the spacecrafts moving apart relative to each other? a) 0.496c b) 0.467c c) 1.750c d) 0.143c e) 0.991c 10. How far apart must two objects on the moon be to be resolved by a telescope which has a 7.80-m diameter mirror? The wavelength of the light used is A610 nm, and the distance to the moon to be 3.80 x 105 km. a) 24.4 m b) 29.7 m c) 36.3 m d) 72.5 m e) 12.2 m 11. A converging lens with a focal length of (f₁ = 32.0 cm) is placed 42.0 cm to the left of a diverging lens with a focal length of (f2 = -25.5 cm). An object is placed 40.0 cm to the left of the converging lens. What is the location of the image produced by the combination of lenses? a) 32.5 cm to the right of the diverging lens b) 32.5 cm to the left of the diverging lens c) 160 cm to the left of the…
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