When should I use planetary gears? Generally, planetary gears are used as speed reducers. They are used to slow down motors and increase the torque. Torque is the working power of the machine. But we’ve seen our planetary gears turned around to be used as speed increasers, too. Why do automatic transmissions use planetary gears? […]
What are 2 facts about the geosphere?
What are 2 facts about the geosphere? The geosphere is the earth’s solid rock or rigid outer layer known as the crust. Without the geosphere it would not be possible for humans to live on the planet because there would be no solid ground. Included in the earth’s geosphere are the rocks, minerals, molten rock, […]
Why is fluorine-18 unstable?
Why is fluorine-18 unstable? Fluorine-18 Of the unstable nuclides of fluorine, 18F has the longest half-life, 109.739 minutes. It has two decay modes, of which the main one is positron emission. For this reason 18F is a commercially important source of positrons. Like all positron-emitting radioisotopes, 18F also may decay by electron capture. Why is […]
Which of the following is the best example of weathering?
Which of the following is the best example of weathering? The correct answer is (a) the cracking of rock caused by the freezing and thawing of water. What causes physical weathering quizlet? Physical weathering can be caused when rocks formed under pressure deep within the Earth become exposed at the surface. When overlaying material is […]
What does an explosion shockwave feel like?
What does an explosion shockwave feel like? They feel a jolting sensation that is not like anything they’ve ever experienced before in their lives. It can be much more severe than that and produce unconsciousness and damage to the body. Some of that is related to other aspects of the explosion obviously. Do you feel […]
How do you know if an electron will be ejected?
Why is it called a shield volcano?
Why is it called a shield volcano? Illustrated Volcano Glossary Shield volcanoes are volcanoes that mainly erupt fluid (usually basaltic) lava flows that are able to travel over long distances and thus construct over time broad, gentle slopes. They are called shield volcanoes, because they resemble the shape of a warriors’shield. How dangerous is a […]
How do you calculate cooling capacity of a heat exchanger?
Does anyone know anyone?
Does anyone know anyone? ‘Anybody’ is a third person singular form and takes -s in the present simple tense. That’s why the question form requires -s and ‘Does anybody’ is correct. The same would apply to ‘Does anyone’, ‘Does anything’ etc. What is the difference of do and are? We use does and is with […]
What is mechanical energy give two examples?
What is mechanical energy give two examples? A moving car possesses mechanical energy due to its motion (kinetic energy). A moving baseball possesses mechanical energy due to both its high speed (kinetic energy) and its vertical position above the ground (gravitational potential energy). How many types of mechanical energy explain it? two types Does a […]