How long does it take to build a rocket? A ‘simple’ rocket, like the falcon 9 from SpaceX, may take 18 months to make, but one that can take people into outer space, like the shuttle, can take 5 years to make, start to finish. What is a 2 stage rocket? A two-stage-to-orbit (TSTO) or […]
How many times do pulsars spin?
How many times do pulsars spin? The fastest known millisecond pulsars can rotate more than 700 times per second. How do pulsars die? Since the light energy escapes, the production of the energy beam robs energy from the pulsar, so the pulsar’s rotation slows down (angular momentum does slowly decrease). Eventually, the pulsar dies away […]
How many electron domains does CO2 have?
How many electron domains does CO2 have? 2 electron domains How do you count electron domains? Count the total number of electron domains. Use the angular arrangement of the chemical bonds between the atoms to determine the molecular geometry. Keep in mind, multiple bonds (i.e., double bonds, triple bonds) count as one electron domain. In […]
What has more water lakes or rivers?
What has more water lakes or rivers? By comparison, freshwater comprises only 3% of the earth’s water, and surface water is only 0.3% of that 3%. Furthermore, rivers and lakes comprise 2% and 87%, respectively, of surface water. Thus, rivers contain only 0.00018% and lakes only 0.0078% of the earth’s water. Who has the most […]
What does 1 dB mean?
What problems are created by rapid urbanization quizlet?
What problems are created by rapid urbanization quizlet? The rapid growth of cities forced people to contend with problems of housing, transportation, water, and sanitation. What causes a population shift from rural to urban areas in the late 1800’s quizlet? What were the main causes of population growth in American cities in the late 1800’s? […]
Why is there vacuum above the level of mercury in a mercury barometer?
Why is there vacuum above the level of mercury in a mercury barometer? The top of the barometer is filled with nothing (vacuum) because the mercury must have the space to expand and contract without any other force affecting it; a gas or liquid in the top would have its own pressure against the mercury […]
Which is more dangerous an earthquake or volcano?
Which is more dangerous an earthquake or volcano? Earthquakes can cause damage by shaking, tsunami’s, and landslides. Volcanoes can cause damage by ash flows, release of gases, mudflows, lava flows, and landslides. However, earthquakes can cause disasters without the help of a volcano. Earthquakes generate seismic waves that can release great energy. How do you […]
What is the formula for calculating core area?
What is the formula for calculating core area? The equation you will need to use is: A = L x W. This answer will be in millimeters squared, and effective core area is always reported in millimeters squared (mm^2), so you have no factor conversion to make here. How do you find the cross sectional […]
How can impress a customer?
How can impress a customer? You don’t have to do extra special things to impress your potential customers. You just have to understand their needs and offer them a relevant solution…. Use the power of social proof. Listen to what they are saying. Give them personalized incentives in your email. Be grateful. Make them feel […]