How does Pegasus reduce the cost of a launch?     by minimizing atmospheric drag     by minimizing the problems caused by gravity     by giving the spacecraft an additional velocity boost     by reducing the amount of on-board oxygen needed     all of the above

Q: Newton's Law of Gravitation shows that if a person weighs w pounds on the surf ace of the earth,…

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Q: Suppose you made a hole all the way through the middle of the earth. If you fell in the hole, would…

A: Suppose you made a hole all the way through the middle of the earth. As due to the earth core no one…

Q: You are explaining to friends why astronauts feel weightless orbiting in the space shuttle, and they…

A: Write the expression for the acceleration due to gravity. Here, G represents the gravitational…

Q: Two 10 kg particles are placed 500 mm apart. Express the gravitational attraction acting on one of…

A: Given:Mass,m=10 kgRadius,r=500 mm             =0.5 mGravitational constant,G=6.673×10-11 Nm2/kg2Find…

Q: On the syrface of Mercury, the 11. gravitational acceleration is 0.38 times its value on Earth, a.…

A: 11(a) - given that gravitational acceleration on the surface of mercury is 0.38 times on the earth…

Q: Hypergolic (hydrazene) engines are typically used     only on interplanetary probes     to slow…

A: Required :  Use of Hypergolic engines.

Q: Make a short report on vehicles used for space missions recently.

A: A spacecraft is a vehicle or machine designed to fly in outer space. A type of artificial satellite,…

Q: SpaceX engineers is planning to build a 2-stage rocket which has a-t graph as shown. By their…

A: The change in position, velocity and acceleration are related as follows. Velocity is the rate of…

Q: During a launch, why do astronauts typically experience the maximum acceleration immediately before…

A: Answer: because the Earth's gravity is strongest just before we reach orbit During a launch, since…

Q: 8. The International Space Station is in orbit about 408 km above the surface of Earth. Calculate…

A: Given: The height of the space station from the earth's surface is 408 km = 408000 m.…

Q: If you weigh 340 N on Mars, what would be your mass? How would you compare your weight on Mars to…

A: Weight = mass x acceleration due to gravity

Q: Weight is mass times the acceleration of gravity. If an individual weighs 166 pounds on Earth, how…

A: Given : Weighs on earth is 166 pounds

Q: It is possible to experience weightlessness in a spacecraft flying through space in any set…

A: Question 1: They are weightless because there is no external contact force pushing or pulling upon…

Q: uppose an astronaut has landed on Mars Fully equipped the astronaut has a mass of 125kg and when the…

A: Given: The mass of the astronaut is 125 kg. The weight of the object at Mars is 49 N.

Q: An asteroid exerts a 360-N gravitational force on a nearby spacecraft. If the spacecraft moves to a…

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Q: The Space Shuttle was the first spacecraft to     land vertically when it returned to Earth…

A: Space shuttle was the first spacecraft to?

Q: Inside the command module (the spherical dome at the front) there is a 10.86 m diameter centrifuge,…

A: Given diameter d = 10.86 m radius r = d/2 = 10.86/2 = 5.43 m frequency = 9.2 rpm = 9.2/60 rps =…

Q: cott threw a rock which is four feet away from her. If that room is free from air resistance, wind…

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Q: Example of weightlessness?

A: If there is no external contact force acting us, then we feel weightless.

Q: A spinning donut-shaped space station can create a kind of artificial gravity. One proposed use for…

A: Ans : 64.9s

Q: NASA is expected to send 2600-kg satellite 450 km above the earth's surface what is it's radius

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Q: The total mass of the Mars Pathfinder Lander is 860 kg. The acceleration due to gravity on Mars is…

A: Given data: Mass (m) = 860 kg Acceleration due to gravity on Mars (g) = 3.8 m/s2 Air resistance…

Q: Researchers from NASA performed an experiment that will carry a land rover of 900 kg on MARS at a…

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Q: You throw a ball of mass 1 kilogram upward with a velocity of a = 25 m/s on Mars, where the force of…

A: A ball thrown upward will have final velocity is, initial velocity is and the distance traveled as…

Q: If the satellite was placed in an orbit three times farther away, about how long would it take to…

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Q: We always launch vertically when leaving Earth because     it minimizes the atmospheric drag…

A: Space has occupied a special place in the human mind & we have discovered a way to explore it.…

Q: A spacecraft is in a 400 km by 800 km elliptical orbit and must transfer to a 16,000 km by 25,000 km…

A: Ans: a) 4.08km/s        b) 3.15 km/s       c) the answer will be same if we reverse the orbits.

Q: ks) (a) Calculate the net acceleration of a space shuttle and rockets at the time of liftoff. (b)…

A: Given   force produced during the lift of on shuttle and rocket F = 1.7 × 107 N Mass of shuttle and…

Q: Astronaut Harry Skyes has a mass of approximately 85.0 kg. What is his weight on Mercury?…

A: Given-  Mass of an astronaut = 85 Kg Gravity of mercury = 3.70ms2

Q: he Space Shuttle was the first spacecraft to     land vertically when it returned to Earth…

A: A space shuttle is a space vehicle designed to be launched like a rocket but land like a plane. The…

Q: Asteroid Toutatis passed near Earth in 2012 at eighteen times the distance to our Moon. If it has a…

A:

Q: The snow accumulated on the wings of an eroplane may decrease the lift. Why?

A: The accumulation of snow on an aeroplane wings may reduce the lift. Due to accumulation of snow on…

Q: Calculate the speed of the ISS.  Assume it takes 92 minutes to orbit once and that the altitude…

A: T=92 min = 92×60=5520 sh=410 km =0.41×106 mR=6.37×103 km=6.37×106 m

Q: When large communications satellites are positioned in geosynchronous orbit (GEO), they are first…

A: The given values are,

Q: Your friend says that the primary reason astronauts in orbit feel weightless is that they are beyond…

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Q: Two satellites in space, each with a mass of 9000KG, are 2500m apart from each other. What is the…

A: Given data: Mass of the space satellites (m) =9000 kg Distance between the spaceships (r) = 2500 m…

Q: Is it true that weightlessness is a lack of gravity

A: Yes, weightlessness is a sensation experienced by an individual when there are no external objects…

Q: If we could "turn off gravity" as it acts between the Earth and a cell phone satellite that is in…

A: For the satellite to remain in its orbit, the centripetal force of the satellite must be balanced by…

Q: Is it possible to escape the force of gravity by going into orbit? How does the force of gravity in…

A: It is not possible to escape the force of gravity by going into orbit.

Q: How would the force of gravity between two masses be affected if the separation distance between…

A:

Q: Calculate the acceleration of gravity (in m/s²) on the surface of the sun. m/s2 By what factor would…

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Q: How could an astronaut in a space shuttle 'drop' an object vertically to Earth?

A: if an object has to fall vertically down wards towards the Earth then it must not possess any…

Q: What is used to determine the four categories of spacecraft?

A: A satellite is an object in space that orbits or circles around a bigger object. There are two kinds…

Q: relationship between the acceleration due to gravity and force of gravity

A: Force of gravity on any object is mass times acceleration  due to gravity .   This is valid for any…