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February 2026

34,964 public questions were asked this month.

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Recent questions

Latest from February 2026

A pulley system is operating at only 50% efficiency. How could the efficiency be increased? (1 point) Responses by reducing the friction on the pulleys by reducing the friction on the pulleys by decreasing the amount of...
Asked by IGotYa 1 answer
What is the name of the fixed point about which a lever rotates?(1 point) Responses groove groove pulley pulley fulcrum fulcrum bar
Asked by IGotYa 1 answer
What can be done to improve the efficiency of a ramp?(1 point) Responses Smooth the surface. Smooth the surface. Insulate the surface with foam. Insulate the surface with foam. Make it shorter and steeper. Make it shorte...
Asked by IGotYa 1 answer
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?(1 point) Responses A smaller amount of energy is wasted by the incandescent bulb. A smaller amount of energy is wasted by the incandescen...
Asked by IGotYa 1 answer
How Luvvie Ajayi Jones structures her talk in the TED Talk video “ Get comfortable with being uncomfortable”.. Note the introduction, body, and conclusion. How does she set up the main points and build the narrative?
Asked by job 1 answer
Question Which car has the greatest efficiency?(1 point) Responses a 900 kg car that travels 15 km per liter of fuel a 900 kg car that travels 15 km per liter of fuel a 900 kg car that travels 20 km per liter of fuel a 9...
Asked by IGotYa 1 answer
Which car has the greatest efficiency?(1 point) Responses a 900 kg car that travels 15 km per liter of fuel a 900 kg car that travels 15 km per liter of fuel a 900 kg car that travels 20 km per liter of fuel a 900 kg car...
Asked by IGotYa 1 answer
A person uses a screwdriver as a lever to open a can of paint. Where is the fulcrum in this situation?(1 point) Responses the point where the screwdriver touches the rim of the can the point where the screwdriver touches...
Asked by IGotYa 1 answer
A shovel performs several different functions. One of these is that it gives mechanical advantage as a lever. When does it act like a lever? (1 point) Responses when you step up onto the shovel with both feet to use your...
Asked by IGotYa 1 answer
Which statement best describes work?(1 point) Responses Work is done when a force causes an object to move. Work is done when a force causes an object to move. Work is done whenever an object is held in place by multiple...
Asked by IGotYa 1 answer
Which statement best describes energy?(1 point) Responses Energy is a push or pull on an object that will change the motion of the object. Energy is a push or pull on an object that will change the motion of the object....
Asked by IGotYa 1 answer
Which example represents a class 2 lever?(1 point) Responses a screwdriver opening a paint can a screwdriver opening a paint can tweezers plucking hairs tweezers plucking hairs salad tongs picking up salad salad tongs pi...
Asked by IGotYa 1 answer
Use the image of the pulley to answer the question. An illustration shows a system of two pulleys lifting a block. Lifting the weight without a pulley requires a force of 400 newtons over a distance of 4 meters. How do t...
Asked by IGotYa 1 answer
Which advantage does a screw have over a nail? (1 point) Responses A screw allows the force to be applied in a more convenient direction. A screw allows the force to be applied in a more convenient direction. A screw is...
Asked by IGotYa 1 answer
Use the picture to answer the question. An illustration shows a man lifting a box using a pulley. What is accomplished by this simple pulley? (1 point) Responses It changes the distance of the pull needed to lift the obj...
Asked by IGotYa 1 answer
When economists decide to produce a good or provide a service over another, there is always an... Opportunity cost Benefit we cannot see immediately Financial loss
Asked by Alexis 1 answer
How does the government get money to pay for goods & services in the market? There are two (2) ways mentioned in the video. Taxes Trade Grants Borrowing Money
Asked by Alexis 1 answer
Most modern economies are Free-Market economies Command economies Mixed economies Traditional economies
Asked by Alexis 1 answer
How does the government get involved in a free-market economy? By owning the factors of production By controlling the price of consumer goods By creating regulations
Asked by Alexis 1 answer
Based on Adam Smith's quote, an economy is most productive and efficient when.... Individuals have a desire to serve others. Individuals serve thier own self-interest. Individuals are educated.
Asked by Alexis 1 answer
Select CONS of having the government control the factors of production. (Two answers will need to be selected). market is taken for granted waste of resources (inefficient) slow to adjust to consumer's preferences
Asked by Alexis 1 answer
How does the invisible hand of the free market help ensure that quality goods are produced? By allowing the government to regulate and inspect all goods for quality. By encouraging producers to improve quality to attract...
Asked by Alexis 1 answer
In free-market economies, the objective of business is to: Follow traditions make useful goods turn a profit ensure equal distribution of goods
Asked by Alexis 1 answer
What type of attitude do governments in free-market system have toward the economy? Controlling Laissez-Faire Free market Investigative
Asked by Alexis 1 answer
Which countries have truly been communist? The Soviet Union Cuba None of the above North Korea
Asked by Alexis 1 answer