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The radius of the earth is 6400 km — a satellite is in a
the radius of the earth is 6400 km — a satellite is in a circular orbit at an altitude of 600 km above earth. find the speed of the satellite and the acceleration.… read more
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A): A motorcar of mass 1700 Kg accelerates from 150 km/hr to
A): A motorcar of mass 1700 Kg accelerates from 150 km/hr to 240 km/hr in 2.5 seconds. * Find the average acceleration and the force needed to create this acceleration… read more
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Physics questions: a 5kg board of length 4 m is hinged on
physics questions: a 5kg board of length 4 m is hinged on one side and a rope connected to the other end is holding it up. One m from the hinge, there is a block that weighs 12 kg. Does the normal for… read more
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2. NASA's Langley Research Centre has been experimenting with
2. NASA's Langley Research Centre has been experimenting with the use of air bags to soften the landings of crew exploration vehicles (CEV) on land. What stopping time will be required in order to saf… read more
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@ryan --- radius of earth = 6400 km. a satellite is in orbit
@ryan --- radius of earth = 6400 km. a satellite is in orbit at 600 km. find the liner acc and speed of the satellite. And: 8.2 m/s^2 and 7600 m/s Pls explain also -- sat A has a radius R and period T… read more
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physics questions: (1) as a ball is traveling upwards, what
physics questions: (1) as a ball is traveling upwards, what work is done by gravity? (2) when a skydiver opens her parachute, is the reaction force air resistance or gravity of the earth on the man or… read more
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PHYSICS -- the outer edge of a grinding wheel 9 cm in radius
PHYSICS -- the outer edge of a grinding wheel 9 cm in radius moves at a rate of 6 m/s. What length of thread could be wound on the rim of the wheel in 3 sec? I got the angular vel = 67 but don't know … read more
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Thanks so much. I have a few more questions and it would be
Thanks so much. I have a few more questions and it would be great if you could answer them! It would be worth more than \$40 though I'm sure. 2. A skateboarder is descending a curved 1/4 pipe ramp. The… read more
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1. (TCO 2) Galileo discovered that an object in free fall (ignoring
1. (TCO 2) Galileo discovered that an object in free fall (ignoring air resistance) __________. (Points : 2) falls at a constant velocity has a velocity proportional to its weight falls with increasin… read more
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"For Steve": Can you kindly help me with a couple more? Im
"For Steve": Can you kindly help me with a couple more? I'm not very good at these and I'm having a very difficult time. I'm very grateful for your assistance. 1. An apple is resting on a table. Draw … read more
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2. A block of mass 3 kg slides along a horizontal surface while
2. A block of mass 3 kg slides along a horizontal surface while a 20-N force is applied to it at an angle of 25°, as shown. If needed, use g = 10 m/s2. For a coefficient of kinetic friction of 0.3 bet… read more
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the acceleration ue to gravity ,g,varies with height above
the acceleration ue to gravity ,g,varies with height above the surface of the earth , in a certain way. if you go down below the suface of the earth ,g varies in a different way. it can be shown that … read more
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What is a mathematical model Explain in your own words. What
What is a mathematical model? Explain in your own words. What are some examples of mathematical models that we can use when working with quadratic functions?… read more
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Part 1 The shuttle must reduce its velocity at a pre-calculated
Part 1: The shuttle must reduce its velocity at a pre-calculated point in orbit in order to return to Earth. For this maneuver, the shuttle is turned into an attitude with the Orbital Maneuvering Syst… read more
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I have to write a quadratic function for real life but I cannot
I have to write a quadratic function for real life but I cannot fgure out what a should be. f(x)=ax^2+bx+c I am doing it on a bald eagle swooping down at 100 mi/hr from a hight of 75 ft I figure c is … read more
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5. Many people mistakenly believe that austronauts that orbit
5. Many people mistakenly believe that austronauts that orbit the Earth are "above gravity." Calculate the acceleration due to gravity (g) for space shuttle territory, 200 kilometeres above the Earth'… read more
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Block A (m 2.10 kg), originally at rest, is pushed with a
Block A (m = 2.10 kg), originally at rest, is pushed with a net horizontal force of 8.76 N for 5.43 m as it slides across a horizontal, frictionless surface. Then the force is removed and the Block A … read more
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1. An asteroid revolves around the sun with a mean ...
1. An asteroid revolves around the sun with a mean (average) orbital radius twice that of Earth's. Predict the period of the asteroid in Earth years. ____ yr &n bsp; 2. Tom has a mass of 75.0 kg and S… read more
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