Sun is 4 X 10^26 watts and Los Angeles 3 X 10^8 watts How many cities like Los Angeles could be powered if we use all the power of sun puts out?

Q: The Sojourner rover vehicle shown in the sketch below was used to explore the surface of Mars as…

A: Given data:  Power (P) = 10 W Energy (E) = 3.6×107 J Required: Time (t) in hours

Q: How much energy is required to move a 1400 kg object from the Earth's surface to an altitude twice…

A: Given:-  The mass of the object is m = 1400 kg  The object moves Earth's surface to an altitude…

Q: I have 72 lightbulbs in my house. 53 of these lightbulbs are 65 watt and the other 19 lightbulbs are…

A: Determine the energy used in 1 year by 53 bulbs of 65 watts as follows.

Q: How much energy is required to move a 1250 kg object from the Earth's surface to an altitude twice…

A:

Q: In Arizona, where there are 316 sunny days per year, it requires 330 acres of land to generate 300…

A: First, we can calculate the power density per acre of land in Arizona: 300 MW / 316 days / 330 acres…

Q: Suppose a person eats 2000 Kcal per day. Using the facts that 1 Kcal is approximately 4.2 Kj (a…

A: Joule is unit of energy or work. And Watt is the unit of power, which is energy per unit time. So,…

Q: Suppose that you want to build a tower out of bricks. Suppose that each brick has a mass of 0.5 kg…

A: The mass of the block, The height of each block, The acceleration due to gravity,

Q: Not from book (1): Magnetar. On December 27, 2004, astronomers observed the greatest flash of light…

A:

Q: As it orbits Earth, the 11,000-kg Hubble Space Telescope travels at a speed of 7,900 m/s and is…

A: Given data The mass is m=11000 kg The speed is u=7900 m/s The height is h=560000 m The acceleration…

Q: How much energy is required to move a 1300 ka ohiect from the Farth's surface to an altitude twice…

A: Write the given values of the problem- mass(m) m=1300 kg

Q: A new coal-burning power plant can generate 1:5 gigawatts (billion watts) of power. Burning 1…

A: Given data: Energy generate = 1.5 GW Need to determine the energy generate in one month.

Q: Calculate the gravitational potential energy of a light that a mass of 3 kg and is 6 m above the…

A: Given data :                  Height     =     h          Gravitational pull    =    g…

Q: a) How many Joules of energy are needed to keep a 225 Watt ceiling fan (with lights) working for 1…

A: (a) Watt is defined as  1 watt = 1 joule per second and Energy = power x time.  (b) & (c) Unit…

Q: Pablo wants to set up a solar heater for an indoor pool. If each panel produces 100 W of power, th

A: Given: Power produces by the pool is P=100W. Temperature T1=85F=302.6K Temperature T2=60F=288.7K…

Q: Humanity's Energy Needs: Humankind's total annual energy need is approximately 4 x 10^20 J. a) What…

A: Energy required by human kind in 1 year is E = 4.0 x 1020 J Solar energy reaching earth is ESOL =…

Q: What is the escape velocity of Sun.

A: Escape velocity is the minimum speed that is required for a non-propelled object to overcome the…

Q: Which could use up more energy: A: running a distance of 2.7 kilometers at 6 meters per       second…

A: Given: The distance is 2.7 km. The first speed is 6 m/s. The power consumed is 600 W. The second…

Q: Does the international space station have gravitational potential energy? kinetic energy?Explain.

A: International space station obtains all of its power from the Sun. it is 149 million kilometer from…

Q: Which could use up more energy A. Running a distance of 1.4 kilometers of 7.4 m/s which uses up…

A: distance = speed x time  Energy = power x time

Q: The summit of a mountain is 5540 m above sea level. (a) How much energy would a 87 kg climber expend…

A:

Q: How much energy is required to move a 1000-kg object from the Earth's surface to an altitude twice…

A: Given that Mass of the object m = 1000 kg Height from the earth surface h = 2R Where R = Radius of…

Q: How many watts of radiation does a 1-meter-square region of the Sun’s spot emit, at a temperature of…

A:

Q: A 3.5 kg rock is at the top of a 37 m cliff. How much energy does the rock have?

A:

Q: Calculate the gravitational potential energy of a light that a mass of 30 kg and is 12 m above the…

A: Given data :                Gravitational pull    =    g                 Height     =   h…

Q: A man weighing 73.4 kg is standing at the 4th floor of a building, which is 15 meters above the…

A: Mass of the person m=73.4 kg, height at which he is standing from the ground h=15 m and acceleration…

Q: If the average household in a region consumes about 5,250 kWh of energy per year. In the region, the…

A: Given Avg energy consumption in an year =  5,250 kWh  Avg annual solar energy potential  per year…

Q: The summit of Mount Everest is 8850 m above sea level. (a) How much energy would a 90 kg climber…

A:

Q: How much energy is required to move a 900 kg object from the Earth's surface to an altitude twice…

A: Given data The mass of the object is given as m = 900 kg. Information Known The radius of the…

Q: This picture shows a radiometer. It is designed to be placed in a sunny window. One side of each…

A:

Q: How much energy is required to move a 1 000-kg object from the Earth’s surface to an altitude twice…

A: The energy required to move an object from the surface of Earth to the given altitude can be given…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.