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While looking through the Mt. Palomer telescope, you discover a large planetary object orbited by a single moon. The moon orbits the planet every 7.85 hours with the centers of the two objects separated by a distance roughly 2.20 times the radius of the planet. Fellow scientists that the planet is made of mostly iron. In fact, the media has dubbed it the "Iron Planet" and NASA has even named it Planet Hephaestus after the Greek god of iron. But you have your doubts. Assuming the planet is spherical and the orbit circular, calculate the density of Planet Hephaestus.
A car rounds a corner of radius 80 m at a speed of 20 m/s. What is the smallest value that the coefficient of static friction between the wheels and the road can have
A parallel plate capacitor is made with rectangular 50.0cm x 42.0cm plates seperated by a vacuum gap, find the capacitance between the two plates without knowing either the charge (Q) or the distance between the two plates (d)
A vessel whose walls are thermally insulated contains 2.5 {rm kg} of water and 0.6 {rm kg} of ice, all at a temperature of 0.0 ^circ {rm{C}}. The outlet of a tube leading from a boiler in which water is boiling at atmospheric pressure is inserted ..
After a plant or animal dies the 14C content decreases with a half-life of 5730 years. what is the age (in years) of the ancient site
A single string is made up of two strings of different densities joined together. Each of the strings is 1.40 m long. what is the tension on the combined string
The interior temperature is kept at 5°C, while the temperature at the outside surface is 25°C. Explain by how much heat per second is being removed from the unit?
A basketball is launched with an initial speed of 10.0 m/s and follows the trajectory shown. From what distance x the ball is shot
The string has a breaking-point force of 45 N. Illustrate what is the largest value v can have without the string breaking?
At the end of three months, the spot rate is $1.37 per euro, and Quality delivers the merchandise, collecting 400,000 Euros. Illustrate what are the effects on net income from these transactions?
A uniform electric field of magnitude 256 V/m is directed in the negative y direction. A +12.9 uC charge moves from the origin to the point (x, y) = (20.0cm, 45.6 cm). What was the change in the potential energy of this charge? Through what potent..
What is an average power output of the laser. What is the rms value of the electric field in the beam.
In the figure the man hanging upside down is holding a partner who weighs 505 N. what force must the man apply to his partner in the straight-down position
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