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A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, 13 years have elapsed on earth, and 8.5 years have elapsed on board the ship. How far away is the planet, according to observers on earth?
Assuming that the bond energy holding together a water molecule is typical, use table below to estimate how various molecular bonds might be broken with this energy.
A 1.0 kg stone is being whirles at constant speed of 12 m/s in a circle, held on a frictionless surface by a steel wire which is horizontal. The wire is 4.0 m long and its radius is 1.0 mm. Find out the strain in the wire.
In a hydraulic system, the larger piston to be used to lift a 1670kg car has a diameter of 24.2cm, If instead compressed air at 115 psi of pressure is used, what is the largest mass car (in kg) that the system can lift
A 3.4M? resistor is connected in series with an initially uncharged 0.29?F capacitor. This arrangement is then connected across four 1.5-Vbatteries, What is the maximum charge on the capacitor
IF Earth's orbit were suddenly to become much more eccentric. keeping orbital semimajor axis as is, fixed at 1 AU, but let's imagine shifting both the Earth's perihelion and aphelion points by 0.9 AU, so that at perihelion we were only 0.1 AU from th..
A 16 kg steel ball is launched from a cannon at an angle of 20 degrees above the horizontal. The cannon exerted an average force of 1200 Newtons on the ball during launch. Now that ball is in the air and has almost reached its target, what is the ..
An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 14.9 N. compute the volume of the object
A coin is placed 18.0cm from the axis of a rotating turntable of variable speed. obtain the coefficient of static friction between the coin and the turntable
On Apollo Moon missions, the lunar module would blast off from the Moon's surface and dock with the command module in lunar orbit. Find the impact speed of the lunar module
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.20 min, find the average velocity and degree south of west
A 110kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350N. For the first 15.00 m the floor is frictionless and for next 15 m the coefficient of friction is 0.30. What is the final speed of the crate.
What is the minimum thickness of the film. what is the magnitude of the average acceleration of the ball through out this time interval.
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