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A 27 year-old biologist makes a trip to study lifeforms in a distant planet 17 light-years away. The round tripincluding a stay of 1 year in the distant planet takes 38 yearsaccording to the clock on earth. The biologist's son is 4.0year-old when she left. Assume that the planet is not moving withrespect to earth. How fast is the spaceship traveling? Give youranswer in terms of the speed of light. You do not need to enter "c"as unit.
How old is she when she returns according toher clock?
How old is her son according to the clock onearth?
What is the total distance traveled accordingto the biologist? Give your answer in light-years.
Find the resultant force of a tank that is entirely filled with an incompressible fluid and has a piston at end. Side going into take F=100N
show that the horizontal distance that the aircraft engine falls is 8400 m. If the airplane somehow continues to fly as if nothing had happened. where is the engine relative to the airplane at the moment the engine hits the ground?
Joe pushes down the length of the handle of a 12.6 kg lawn spreader. What force must Joe apply to the handle
A vertical spring is 10.0 cm long when supporting a 20.0 kg mass, and it is 12.0 cm long when supporting a 32.0 kg mass. What is the length of spring with zero load
A boy kicks a ball horizontally near the edge off a boardwalk, with an initial speed of 9.0 m/s. Determine the height of the boardwalk above the water
The angular speed of a propeller on a boat increases with constantacceleration from 10.9 rad/s to 24.0 rad/s in 2.20 revolutions. What is the acceleration of the propeller
A capacitor is made from two hollow, coaxial, iron cylinders, one inside the other. The inner cylinder is negatively charged and the outer is positively charged; the magnitude of the charge on each is 19.0pC. The inner cylinder has a radius of 0.3..
The battery charger for an MP3 player contains a step-down transformer with a turns ratio of 1:25, What voltage does the secondary coil of the transformer provide
the leyden jar invented by chance in 1746 was one of the earliest types of capacitors see the figure below made by
The length of a beam increases by 2.3mm when its temperature is raised from 29.5 C to 75.6 C. What is the length of the beam at the initial temperature
A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to 0.390 its original speed. What is the mass of the second ball
An ac source of maximum voltage Vo=30 V is connected to a resistor R=50O, an inductor L=0.6 H, and a capacitor C=20 uF. What is the maximum charge on the capacitor
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