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A spaceship leaves earth and travels to star Acrux, which is located 410 ly from earth ( as measured from Earth).
A) If the spaceship travels at 0.95c, how old an occupant be upon arriving at Acrux if she was 13 years old when the ship departed from Earth
B) How far will the occupants of the spaceship say they traveled when they arrive at Acrux
C) How old will her twin sister be when she returns to Earth assuming she spent no appreciable time at Acrux?
Prior to the music CD, stereo systems had a phonographic turntable on which vinyl disk recordings were played. calculate the total number of rotations for the complete start-up
Parallel conducting tracks, separated by 2.79 cm, run north and south. There is a uniform magnetic field of 1.27 T pointing upward (out of the page). What is the direction of the magnetic force on the rod
what is the compressional stress that the arm withstands during the crash?
A 7.0-kg object is attached to one end of a horizontal spring that has a negligible mass and a spring constant of 300 N/m. The other end of the spring is fixed to a wall. The spring is compressed by 10 cm from its equilibrium position and released fr..
A solid wire 2.1mm in diameter carries a 10.0 A current with uniform curent density. Use Ampere's Law to determine the magnetic field strength
question1assume you had done the latent heat of fusion experiment with ice that was considerably colder than 0 degc.
A tennis player receives a shot with the ball (0.060 0 kg) traveling horizontally at 55.5 m/s and returns the shot with the ball traveling horizontally at 36.0 m/s in the opposite direction. What work does the racquet do on the ball
In the figure, a laser beam of power 5.10 W and diameter 2.20 mm is directed upward at one circular face (of diameter less than 2.20 mm) of a perfectly reflecting cylinder, What is the cylinder's height
Helium-neon laser light (λ = 632.8 nm) is sent during a 0.270 mm wide single slit. What is the width of the central maximum on a screen 1.00 m from the slit?
A blue car with mass mc = 428 kg is moving east with a speed of vc = 20 m/s and collides with a purple truck with mass mt = 1284 kg, What is the magnitude of the initial momentum of the car
Visible light (wavelength 400 - 700 nm) passes through a diffraction grating with 5000 lines/cm and illuminates a wall 5.0 m away. How wide (linear distance) is this order spectrum on the wall
A converging lens forms an image of an object 25 cm to the right of the lens when an object is placed 18 cm to the left of the lens. What is the focal length of the lens
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