From the solar constant and the average distance between the sun
and the earth, estimate (a)...
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
Solutions
Expert Solution
SOLUTION:
SOLAR CONSTANT : The total radiation energy
received from the sun per unit of time per unit of area on a
theoritical surface perpendicular to the sun rays and at earth's
mean distance from the sun.
Estimate how much energy Earth receives from the Sun every
year.
The solar constant is about 1000 Watts per square meter.
An area scales as a distance squared.
1. Estimate the surface area of the Earth facing the Sun (in
meters2)
2. Estimate how much power reaches the Earth's surface (in
Watt).
3. Estimate how much solar energy reaches the earth per year (in
Joule).
4. Estimate the current annual world consumption of energy per
year (in Joule).
5. Estimate...
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
1) The distance between the sun and earth is 1.5 x 1011 m and
the earths orbital speed is 3x104m/s . Use this information to
calculate the mass of the Sun. (G = 6.67 x 10-11 N m2/kg2).
2. If a disk is rotating at 1200 rev/min what is the angular
velocity in rad/sec, what angular (dece)acceleration is required to
stop it in 3 min. What torque will do this? Assume the mass of the
disk is 3kg and radius...
The Venus-Sun distance is 108 million kilometers, and the
Earth-Sun distance is 150 million kilometers. Suppose an imaginary
line from Venus to the Sun forms a right angle with an imaginary
line from Earth to the Sun. How long would it take light to travel
from the Sun to a spaceship halfway along the straight-line path
between Venus and Earth? The time is in minutes.
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
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?
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
During a solar eclipse, the moon, Earth, and sun lie on the same
line, with the moon between Earth and the sun. (a) What force is
exerted on the moon by the sun? N (b) What force is exerted on the
moon by the Earth? N (c) What force is exerted on the Earth by the
sun? N
(Average Earth-moon distance = 3.84 ✕ 108 m, Average Earth-sun
distance = 1.5 ✕ 1011 m, mass of the moon = 7.35...