When Earth is furthest from the Sun, called aphelion, it is
152,100,000 km from the Sun...
When Earth is furthest from the Sun, called aphelion, it is
152,100,000 km from the Sun and has an orbital speed of 29,290 m/s.
What is its orbital speed at perihelion, when it is 147,090,000 km
from the Sun?
When Earth is furthest from the Sun, called aphelion, it is
152,100,000 km from the Sun and has an orbital speed of 29,290 m/s.
What is its orbital speed at perihelion, when it is 147,090,000 km
from the Sun?
____________ m/s
A rocket, launched from the Earth, shuts off its engines when
its speed is 4.90 km/s. It reaches a maximum altitude H of 2790 km
before it falls back to Earth. At what altitude l did the rocket's
engines shut off? The mass, radius, and escape speed of the Earth
are 5.972 x 1024 kg, 6.371 x 106 m, and 11.18 km/s respectively (4
points)
The Earth is bombarded by light from the Sun with a typical,
average intensity of about 1370 W/m2 . Based on this, what is the
average power of the light that hits Jupiter due to the Sun? The
radius of the Earth is 6370 km and the average radius of the
Earth’s orbit is 150 Gm. The radius of Jupiter is 69.9 Mm and the
average radius of Jupiter’s orbit is 778 Gm
From the solar constant and the average distance between the sun
and the earth, estimate (a) the total power emitted by the sun, in
megawatts, and (b) the mass loss of the sun, in tons per day
When we say that the Earth ‘rotates’ on its axis, and ‘revolves’
around the Sun, what does that mean? In which direction does the
Earth revolve and rotate?
Estimate the mass of the Sun from the orbital period of the
Earth (it’s presumed you know what this is !) and the Earth’s
orbital radius of 93 million miles. If the Sun’s radius is 109
times that of the Earth, what is the Sun’s mean density? What is
the acceleration due to gravity on the Sun’s surface? Is it
sensible to go and measure this at night?
Determine the values of m and n when the following average distance from the Sun to the Earth is written in scientific notation: 150,000,000,000 m.
Enter m and n, separated by commas
A space vehicle is traveling at 4300 km/h relative to earth when
the exhausted rocket motor (mass 4m) is disengaged and sent
backward with a speed of 82 km/h relative to the command module
(mass m).a) What is the speed of the space vehicle after the engine
has separated relative to earth? b) What is the speed of the
command module relative to earth just after the separtaion.
A rocket is fired from earth towards sun. Justify that
acceleration due to gravity does not depend on mass of the rocket
moving? Is the acceleration due to gravity on rocket at a point
above earth, inversely related with square of distance of that
point from earth? Explain shortly. Using the following data, how
would you determine the point where the gravitational force on the
rocket is zero? [ Note: neglect the attractive forces of other
planets on the rocket]...