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While looking through the Mt. Palomar telescope, you discover a large planetary object orbited by a single moon. The moon orbits the planet every 7.60 hours with the centers of the two objects separated by a distance roughly 2.45 times the radius of the planet. Fellow scientists speculate 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 Projectile is fired with an initial velocity of 60 m/s at an angle of 379 to the horizontal. Assuming there is no friction, what is the horizontal range of the projectils
A microscope has a 12.0 x eyepiece and a 59.0 objective lens 20.0 cm apart. Calculate (a) the total magnification, (b) the focal length of each lens, and (c) where the object must be for a normal relaxed eye to see it in focus?
A string oscillates according to the equation y´ = (0.175 cm) sin[(?/5.0 cm-1)x] cos[(22.6 ? s-1)t]. What is the distance between nodes
A rectangular container measuring 23 cm 51 cm 65 cm is filled with water. What is the mass of this volume of water in kilograms and grams.
A horizontal spring with a spring constant of 0.6 N/m sits on a frictionless table, What is the magnitude of the elastic force on the mass just after it is released
A vertical spring has one end attached to the ceiling and a 2.50-kg fish attached to the other one. find how fast the fish is moving after it drops 20.0 cm
An elevator cable breaks when a 975 kg elevator is 24.5 m above the top of a huge spring (k = 8.00 x 10^4 N/m) at the bottom of the shaft. Calculate the amount the spring compresses
What is the acceleration of a rising hot-air balloon if the ratio of the air density outside the balloon to that inside is 1.37?
A pair of oppositely charged parallel plates are separated by a distance of 5 cm with a potential difference of 550 V between the plates. A proton is released from rest at the positive plate at the equal time that an electron is released from rest..
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. find the speed of the sled right before the team jumps on the sled
what must be his average speed if he is heading 30.0° south of west for the remaining 54.6 min? mi/h (b) What is his average velocity for the entire trip?
The position of an object as a function of time is given by x= bt + ct3, where b = 1.50 m/s and c = 0.640m/s3. calculate the averagevelocity of the object over time intervals
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