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According to Kepler's harmonic law, how are the period and semimajor axis of a planet related? What's the difference between inferior and superior planets? What is the difference between an inferior conjunction and a superior conjunction?
Question on a planet similar to Earth
On 15 July 2004, NASA launched the Aura spacecraft to study the earth's climate and atmosphere. How many hours does it take this satellite to make one orbit
A Bullet of mass 14g strikes a block of mass 1.2kg, which is at rest on a horizontal frictionless surface and is attached to a coil spring shown. Find the velocity of the block just after impact
If you put a 0.28 kg mass 15 cm from the axis of a massless disk, and you apply a 0.4 N force on a string wrapped at the disk's edge, what is the resulting angular acceleration
In an experiment performed at the bottom of a very deep vertical mine shaft, a ball is tossed vertically into the air with a known initial velocity of 10.0 m/s, calculate the depth of the shaft
determine average net force exerted in the barrel of cannon.
In a large centrifuge used for training pilots and astronauts, a small chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. What is the angular acceleration in the second training exercise
Two cannons, aimed at each other, stand on roofs of two identical (meaning same height) very tall buildings, 100 meters apart. Both cannons are fired at the same time. However, one cannonball is bigger and so it is fired at 20 m/s, while the o..
Intelligent beings in a distant galaxy send a signal to earth in the form of an electromagnetic wave. What is the speed vrel of the galaxy relative to the earth
A ball is thrown from the top of a building upward at an angle of 46 degrees to the horizontal and with an initial speed of 30m/s. the speed of the ball just before it strikes the ground
Potassium is an essential element that normally comprises about 0.30% of a person's body mass. What's the potassium activity in a 69kg person
A heat engine operates in a Carnot cycle between 82.0°C and 345°C. It absorbs 20,000 J of energy per cycle from the hot reservoir, What is the mechanical power output of this engine
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