# Physics

The international space center is 1500km above the earths surface. Determine the escape velocity of a rocket launched into space at this altitude if the mass of the earth is 6*10^24kg and the radius is 6.4*10^6m.

1. 👍
2. 👎
3. 👁
1. (1/2) m v^2 = difference in potential energy between rocket at infinity and at r =( 6.4*10^6 + 1.5*10^6) meters = G m M/r
where G = 6.67*10^-11
v^2 = 2 (6.67*10^-11)(6*10^24)/7.9*10^6

1. 👍
2. 👎

## Similar Questions

1. ### geology(science) i still dont understand

how the earths four subsystems interact with one another. In your response, identify one type of resource from each subsystem on which people depend. all i have so far is this.... the earths 4 subsytems are the following

2. ### Science

How can spectroscopy and infrared technology be useful in space? (5 points) They can enhance speed by making spacecraft fuel more efficient. They can measure magnetic fields produced by astronomical bodies. They can provide an

3. ### Science

Lesson 10: Introduction to Planet Earth Unit Test Science 6 B, i have my answers i need someone to check them please!! and thanks you. connexus academy answers only pls thanks. 1. which of earths spheres contains most of its mass

4. ### math

the international space station orbits 350 km above earth's surface. earth's radius is about 6370 km.use the pythagorean theorem to find the distance from the space station to earth's horizon.

1. ### Physics Question......many thanks

A projectile is shot directly away from Earth's surface. Neglect the rotation of Earth. (a) As a multiple of Earth's radius RE, what is the radial distance a projectile reaches if its initial speed is one-fifth of the escape speed

2. ### Science Help Plz

which of the following statements about earths atmosphere is true? a. earths atmosphere contains 78 percent water vapor which is essential to life b. earhts atmoshpere contains 21 percent oxygen c. earths atmosphere contains

3. ### Science

What was the name of the orbiting telescope that helped explore space by taking images like this one? A) Hubble space telescope B) International space telescope C) Apollo space telescope D) Galileo space telescope

4. ### physics

the solid fuel rocket boosters used to launch the space shuttle are able to lift the shuttle 45 kilometers above earths surface. During the 2.00 min that the boosters operate, the shuttle accelerates from rest to a speed of nearly

1. ### Algebra 1

Earth has a radius of about 6.4 x 10 to the 6th power m. Approximate the surface area of earth using the formula for the surface area is a sphere, S = 4 pi r squared. Earths surface is about 70 percent water. About how many square

2. ### Science

What was the name of the orbiting telescope that helped explore space by taking images like this one? Apollo Space Telescope Hubble Space Telescope Galileo Space Telescope International Space Telescope

3. ### Algebra URGENT! Conic sections

A spacecraft is in a circular orbit 150 kilometers above Earth. Once it attains the velocity needed to escape the Earth's gravity, the spacecraft will follow a parabolic path with the center of Earth as focus. Suppose the

4. ### Physics Number 3 (Online w/ no teacher)

Many people mistakenly believe that the astronauts that orbit the Earth are “above gravity.” Calculate g for space-shuttle territory, 200 kilometers above the Earth’s surface. Earths’ mass is 6 X 10 to the 24th and its