What are the advantages of simple machines? Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities. Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever. Which statement best explains correct Fiona is correct? Which […]
Can you go to the top of the Sears Tower?
Why is the lower fixed point of Fahrenheit is 32?
Why is the lower fixed point of Fahrenheit is 32? On the Fahrenheit scale, the melting point of water is 32°F and the boiling point is 212°F (at standard atmospheric pressure). This puts the boiling and freezing points of water 180 degrees apart. Therefore, a degree on the Fahrenheit scale is 1⁄180 of the interval […]
What happens when a hydrogen atom absorbs a quantum of energy?
What happens when a hydrogen atom absorbs a quantum of energy? What happens when a hydrogen atom absorbs a quantum of energy? When an atom absorbs a quantum energy, it movies to the excited state, and electrons move to higher energy levels. One it is done, it goes back down to ground state and release […]
What are the four goals of the scientific study of human development?
What are the four goals of the scientific study of human development? So as you have learned, the four primary goals of psychology are to describe, explain, predict, and change behavior. What are the 5 stages of human development? The key components of Erikson’s model of human development include stage one, infancy, trust versus mistrust; […]
What are four basic properties of waves?
What are four basic properties of waves? However, all waves have common properties—amplitude, wavelength, frequency, and speed. Amplitude describes how far the medium in a wave moves. Wavelength describes a wave’s length, and frequency describes how often it occurs. Speed describes how quickly a wave moves. What is a surface wave made of? A surface […]
What are the 3 steps to preventing a collision?
What are the 3 steps to preventing a collision? Depending on the situation, you can do one of these 3 things to prevent a collision: stop, steer away or speed up. Read the Collision Avoidance section to learn about the circumstances, when you can apply one or another technique and their advantages and disadvantages. What […]
What is the direction of electric field line?
What is the direction of electric field line? These pattern of lines, sometimes referred to as electric field lines, point in the direction that a positive test charge would accelerate if placed upon the line. As such, the lines are directed away from positively charged source charges and toward negatively charged source charges. Does current […]
How long would it take if the sun exploded?
How long would it take if the sun exploded? around 8 minutes How much longer will the world last? This is expected to occur between 1.5 and 4.5 billion years from now. A high obliquity would probably result in dramatic changes in the climate and may destroy the planet’s habitability. Which IT technology is most […]
What is the hypothesis of a research paper?
What is the hypothesis of a research paper? A research hypothesis is a statement of expectation or prediction that will be tested by research. Before formulating your research hypothesis, read about the topic of interest to you. Do all research papers have a hypothesis? Not all studies have hypotheses. Sometimes a study is designed to […]