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A moon orbits a planet of unknown mass with a period of 1.8 days. If the radius of the moon's orbit is 420,000,000 meters, find the mass of the planet.
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.
A particle moves along x axis according to equations x =2.00+3.00t-1.00t2, where x is in meters and t seconds. At t=3.00s, determine (a) the position of particle. (b) its velocity, and (c ) its acceleration.
Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wavefronts in front of the source compare to those behind it?
What is the difference between mas and weight? On earth, what is the weight of a 1 kg mass, When your textbook says that the moon "falls around the earth,
A source has a half life of 30.2 years. It was created 19 years ago with an initial activity of 1 micro curie. Calculate the initial number of atoms in the sample
What is the minimum time necessary for crossing.
What magnitude of charge must be given to the drop
The rope makes an angle of 70° with respect to the vertical. What is the tangential speed of the ball.
A lottery machine uses blowing air to keep 2000 Ping-Pong balls bouncing around inside a 1.0m X 1.0m X1.0m box. The diameter of a Ping-Pong ball is 3.0 cm. What is the mean free path between collisions?
A man pushes a lawn mower on a level lawn with a force of 187 N. If 51 percent of the force is directed horizontally, how much work is completed by the man in pushing the mower 7.0 m.
At this point you are getting very tired and would like to get back as quickly as possible, but all of the available trails seem to lead you deeper into the woods. You would like to take a shortcut directly through the woods (ignoring the trails)...
A 2.75-gram air inflated balloon is given an excess negative charge, q1 = -3.00 × 10-8 C, by rubbing it with a blanket. It is found that a charged rod can be held above the balloon at a distance of d = 5.20 cm to make the balloon float. In order f..
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