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In a science fiction novel , a starship takes 3 days to travelbetween two distant space stations according to its own clocks.Instruments on one of the space stationsindicate that the trip took4 days. How fast did the starship travel, relative to the spacestation?
a man exerts a force of 60n straight up to lift a watermelon that weighs 2.5 kg. what is the acceleration of the
A proton with a speed of 3.23 104 m/s is moving from infinity directly toward a second proton. Assuming that the second proton is fixed in place, find the position where the moving proton stops momentarily before turning around.
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.10 m2, what is the percentage lost by the window
A speeder is pulling directly away and increasing his distance from a police car that is moving at 25 m/s with respect to the ground. Find the speeder's speed with respect to the ground
The masses and coordinates of three spheres are as follows: 14 kg, x = 1.25 m, y = 1.25 m; 38 kg, x = -2.50 m, y = -2.00 m; 62 kg, x = 0.00 m, y= -0.50 m. What is the magnitude of the gravitational force
A 30.0 capacitor initially charged to 30 is discharged by a 1.40 resistor. How long does it take to reduce the capacitor's charge to 2.00.
The angular momentumof a flywheel having a rotational inertia of 0.150 kgm2 aboutits central axis decreases from 4.00to 1.400 kgm2/s in1.60 s. What is the average power of the flywheel
A rod 14.7 cm long is uniformly charged and has a total charge of−18.6 μC. Determine the magnitude of the electric field along the axis of the rod at a point 55.5612 cm from the center ofthe rod. The Coulomb constant is 8.98755 × 109 N ·m2/C2.
A jet airplane is in level flight. The mass of the airplane is m = 8950 kg. What is the magnitude of the lift force acting on the plane
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 12.0 cm, determine find the electric field just inside the paint layer
Justin moves a desk 4.80m across a level floor by pushing on it with a constanst horizontal force of 340N. find the change on the desks gravitional potential energy
A mirror at an amusement park shows an upright image of any person who stands 1.4 m in front of it. what is the radius of curvature
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