Question

The escape velocity from a massive object is the speed needed to reach an infinite distance...

The escape velocity from a massive object is the speed needed to reach an infinite distance from it and have just slowed to a stop, that is, to have just enough kinetic energy to climb out of the gravitational potential well and have none left. You can find the escape velocity by equating the total kinetic and gravitational potential energy to zero. Given that consider any gas close to the surface of the Moon at a temperature of the Moon's average surface temperature of 270 K.

1. Find the average velocity of a hydrogen atom, a helium atom and a water molecule just above the Moon's surface.

2. Will any of these escape from the Moon?

3. With the Maxwell-Boltzmann distribution of velocity for atoms in a gas in mind, why does the Moon not have an atmosphere but the Earth does?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1


0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Which of the following are true (can be multiple) A. Two moles of helium (He) has...
Which of the following are true (can be multiple) A. Two moles of helium (He) has the same total thermal energy as two moles of oxygen (O) when they are both at 80° C, even though an oxygen atom is heavier than a helium atom. B. The average kinetic energy of an atom of an ideal gas approaches zero at a temperature of 0° C. C. The ideal gas law can be written as PV = NkbT,where N is the...
The moon is an Earth satellite of mass 9.35 x 1022 kg, whose average distance from...
The moon is an Earth satellite of mass 9.35 x 1022 kg, whose average distance from the centre of Earth is 4.85 x 108 m. What is the gravitational potential energy of the moon with respect to Earth? What is the kinetic energy and the velocity of the moon in Earth's orbit? What is the binding energy of the moon to Earth? What is the total mechanical energy of the moon in its orbit?
Part A Estimate the kinetic energy necessary for a projectile with mass m can "escape" from...
Part A Estimate the kinetic energy necessary for a projectile with mass m can "escape" from the surface of a planet if it is launched vertically upward. Express your estimation in terms of g which is the acceleration due to gravity at the planet's surface and Rp which is the planet's radius. Ignore air resistance. i. The kinetic energy is about than 2mgRp. ii. The kinetic energy greater than mgRp. iii. The kinetic energy is about than 2mR2p/g. iv. The...
QUESTION 1 Part 1 Engineers wish to launch a satellite from the surface of the Moon....
QUESTION 1 Part 1 Engineers wish to launch a satellite from the surface of the Moon. What is the minimum speed the satellite must have to escape the Moon’s gravity – that is, what is the escape velocity at the surface of the Moon? The Moon has a mass of 7.3x10^22 kg and a radius of 1.7x10^6 m. a. 1700 m/s b. 5.7x10^6 m/s c. It depends on the mass of the satellite. d. 2400 m/s Part 2 The satellite...
Finding the Spring Constant We can describe an oscillating mass in terms of its position, velocity,...
Finding the Spring Constant We can describe an oscillating mass in terms of its position, velocity, and acceleration as a function of time. We can also describe the system from an energy perspective. In this experiment, you will measure the position and velocity as a function of time for an oscillating mass and spring system, and from those data, plot the kinetic and potential energies of the system. Energy is present in three forms for the mass and spring system....
1. Starting from rest, a CD takes 3.0 s to reach its operating angular velocity of...
1. Starting from rest, a CD takes 3.0 s to reach its operating angular velocity of 450 rpm. The mass of a CD is 17 g and its diameter is 12 cm. You may assume that the small opening at the center of the CD is unimportant when calculating the rotational inertia. Assume that the angular acceleration is constant. a. What is the rotational kinetic energy of the CD after it has completely spun up? b. How high off the...
Heat is the Total internal energy of an object Average kinetic energy of molecules Measure of...
Heat is the Total internal energy of an object Average kinetic energy of molecules Measure of potential energy of molecules Same thing as very high temperature The specific heat of copper is 0.093 cal/g⁰C, and the specific heat of aluminum is 0.22  cal/g⁰C. The same amount of energy applied to equal masses, say, 50 g of copper and aluminum, will result in A higher temperature for copper A higher temperature for aluminum The same temperature for each metal Unknown results The...
If the number of moles of an ideal gas in a firm container doubles while volume...
If the number of moles of an ideal gas in a firm container doubles while volume and temperature remain constant … a. pressure doubles b. pressure quadruple c. pressure remains constant d. pressure is reduced to half e. pressure is reduced to a quarter    a     b     c     d     e incorrect IncorrectQuestion 2 0 / 1 pts There are 3 balloons sitting next to each other, each of a different size. What is in the biggest...
2 Equipartition The laws of statistical mechanics lead to a surprising, simple, and useful result —...
2 Equipartition The laws of statistical mechanics lead to a surprising, simple, and useful result — the Equipartition Theorem. In thermal equilibrium, the average energy of every degree of freedom is the same: hEi = 1 /2 kBT. A degree of freedom is a way in which the system can move or store energy. (In this expression and what follows, h· · ·i means the average of the quantity in brackets.) One consequence of this is the physicists’ form of...
1. First consider a mass on an inclined slope of angle θ, and assume the motion...
1. First consider a mass on an inclined slope of angle θ, and assume the motion is frictionless. Sketch this arrangement: 2. As the mass travels down the slope it travels a distance x parallel to the slope. The change in height of the mass is therefore xsinθ. By conserving energy, equate the change of gravitational potential energy, mgh = mgxsinθ, to the kinetic energy for the mass as it goes down the slope. Then rearrange this to find an...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT