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
The maximum distance from the Earth to the Sun (at aphelion) is
1.521 1011 m, and the distance of closest approach (at perihelion)
is 1.471 1011 m. The Earth's orbital speed at perihelion is 3.027
104 m/s. Ignore the effect of the Moon and other planets. (a)
Determine the Earth's orbital speed at aphelion. m/s (b) Determine
the kinetic and potential energies of the Earth
The sun is 150,000,000 km from earth; its diameter is 1,400,000
km.For a science project on solar power, a student uses a
24-cm-diameter converging mirror with a focal length of 47 cm to
focus sunlight onto an object. This casts an image of the sun on
the object. For the most intense heat, the image of the sun should
be in focus.
a. Where should the object be placed?
b. What is the diameter of the image?
c. The intensity...
A comet moves in an elliptical orbit around the sun. As the
comet moves from aphelion (the point on the orbit farthest from the
sun) to perihelion (the point on the orbit closest to the sun),
which of the following results is true?
Speed of the comet
Angular momentum of the comet/sun system
Gravitational potential energy of the comet/sun
system
A
Increases
Increases
Decreases
B
Increases
Constant
Decreases
C
Decreases
Decreases
Increases
D
Increases
Increases
Constant
E
Constant
Constant
Constant
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