Is renewable energy really better? Renewables generate more energy than is used in their production, and produce fewer emissions than other power sources over their lifetime. While all sources of electricity result in some GHG emissions over their lifetime, renewable energy sources have substantially fewer emissions than fossil fuel-fired power plants. What are the benefits […]
What is the correct format for recording data?
What is the correct format for recording data? The correct format to record this data is (9.23 ± 0.21) s or (9.23 ± 0.21) s, where 0.21 s is the uncertainty measured by starting and stopping the stopwatch as quickly as possible. How do you write significant digits? Rules for Numbers WITHOUT a Decimal Point […]
What are the three key components of Paraverbal communication?
What are the three key components of Paraverbal communication? Paraverbal communication has 3 key components, which are broken out below. Pitch. Pitch is how high or low your voice goes. Speed or cadence. Cadence is how fast or slow you talk. Tone. This is a combination of factors that set or convey meaning. What are […]
Does carrying a heavy bag build muscle?
Does carrying a heavy bag build muscle? When you lift your backpack to place onto your back, you use your shoulder muscles (i.e. deltoids). Throughout the hike you will do this a number of times so make sure that you also have enough strength. Like the abdominal muscles, they stabilise the body and prevent fatigue […]
What are the similarities and differences between the somatic nervous system and the autonomic nervous system?
What are the similarities and differences between the somatic nervous system and the autonomic nervous system? The somatic nervous system has sensory and motor pathways, whereas the autonomic nervous system only has motor pathways. The autonomic nervous system controls internal organs and glands, while the somatic nervous system controls muscles and movement. What is the […]
Does a bullet touch the barrel?
Does a bullet touch the barrel? Bullets touch the inside of the gun’s barrel during normal operation. There’s rifling inside the barrel that’s supposed to impart spin on the bullet. So the barrel rubs grooves in the bullet (this is how CSI can match a bullet to a gun) but the softer bullet does little […]
What are the basic components of a simple circuit?
What are the basic components of a simple circuit? A circuit is the path that an electric current travels on, and a simple circuit contains three components necessary to have a functioning electric circuit, namely, a source of voltage, a conductive path, and a resistor. What is the definition of a simple circuit? A simple […]
What is the weakest of the four fundamental forces?
What is the weakest of the four fundamental forces? Actually, gravity is the weakest of the four fundamental forces. Ordered from strongest to weakest, the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity. Because they both have mass, the two protons exert gravitational attraction […]