How does angle affect work?

How does angle affect work? If you apply force at an angle instead of parallel to the direction of motion, you have to supply more force to perform the same amount of work. If you pull at an angle, the component of the force you apply that’s directed along the floor — in the direction […]

What is an experimental control example?

What is an experimental control example? Experimental controls are used in scientific experiments to prevent factors other than those being studied from affecting the outcome. For example, suppose a researcher feeds an experimental artificial sweetener to thirty laboratory rats and observes that eight of them subsequently die of dehydration. Why is it important to have […]

What happens when something reaches absolute zero?

What happens when something reaches absolute zero? At zero kelvin (minus 273 degrees Celsius) the particles stop moving and all disorder disappears. Thus, nothing can be colder than absolute zero on the Kelvin scale. Physicists have now created an atomic gas in the laboratory that nonetheless has negative Kelvin values. What determines the state of […]

How long is a train with 100 cars?

How long is a train with 100 cars? 5,200 feet What is the longest freight train in the world? TRANSNET, South Africa, broke its own record for operating the longest freight train, and set a new world record on October 24 when it ran a 375-wagon manganese train on the 861km Sishen – Saldanha heavy-haul […]

Is energy released in alpha decay?

Is energy released in alpha decay? The energy released in this α decay is in the MeV range, about 106 times as great as typical chemical reaction energies, consistent with many previous discussions. Most of this energy becomes kinetic energy of the α particle (or 4He nucleus), which moves away at high speed. Is energy […]

Can you sit on a cloud?

Can you sit on a cloud? Nope. You can’t sit on a cloud, because there’s really nothing there. What you think of as a cloud is basically just air. It looks the way it looks because there are many, many, many tiny droplets of water suspended in the air, which refract the light and make […]

Are sensation and perception the same thing?

Are sensation and perception the same thing? Sensation occurs when sensory receptors detect sensory stimuli. Perception involves the organization, interpretation, and conscious experience of those sensations. How do you test for unconscious proprioception? Position sense (proprioception), another DCML sensory modality, is tested by holding the most distal joint of a digit by its sides and […]

What is the function of the dermis?

What is the function of the dermis? The dermis is a fibrous structure composed of collagen, elastic tissue, and other extracellular components that includes vasculature, nerve endings, hair follicles, and glands. The role of the dermis is to support and protect the skin and deeper layers, assist in thermoregulation, and aid in sensation. What are […]

How many horsepower is a human?

How many horsepower is a human? 1.2 hp Why does a horse have 15 horsepower? While it is true that the maximum output of a horse is around 15 horsepower, when you average the output of a horse over the course of a work day it ends up being around a horsepower. Watt defined this […]

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