Are a pair of scissors a compound machine? A pair of scissors is a compound simple machine that uses levers to force wedges (scissors blades) onto something to cut it. Many machines have many simple machines as parts of them. Is a wheel and axle a compound machine? A compound machine is a machine that […]
How do we release the energy stored in fossil fuels?
How do we release the energy stored in fossil fuels? All the energy in oil, gas, and coal originally came from the sun, captured through photosynthesis. In the same way that we burn wood to release energy that trees capture from the sun, we burn fossil fuels to release the energy that ancient plants captured […]
When stress is applied to all sides of the crust Brainly?
When stress is applied to all sides of the crust Brainly? Answer: When stress is applied to all sides of the crust, confining stress occurs. When this happens, the crust compacts, which makes it look smaller. If the stress is too much for the crust to handle, the crust can fracture from the inside. What […]
What are the negative effects of standardized testing?
What are the negative effects of standardized testing? Standardized test scores are often tied to important outcomes, such as graduation and school funding. Such high-stakes testing can place undue stress on students and affect their performance. Standardized tests fail to account for students who learn and demonstrate academic proficiency in different ways. What percentage of […]
At what height will surface tension kill you?
What does infectivity mean?
What does infectivity mean? : the ability to produce or transmit infection : the quality or state of being infective The onset of cough on the second day of illness in this patient, followed by clinical evidence of pneumonia four days later, raised the question of his infectivity during the four days before hospitalization.— What […]
Which plants disperse their seeds by wind?
Which plants disperse their seeds by wind? Wind dispersal Seeds from plants like dandelions, swan plants and cottonwood trees are light and have feathery bristles and can be carried long distances by the wind. Some plants, like kauri and maple trees, have ‘winged’ seeds. What are the 5 types of seed dispersal? There are five […]
What grows exponentially in real life?
What grows exponentially in real life? One of the best examples of exponential growth is observed in bacteria. It takes bacteria roughly an hour to reproduce through prokaryotic fission. If we placed 100 bacteria in an environment and recorded the population size each hour, we would observe exponential growth. How do I calculate exponential growth? […]
How reflected light can be reflected again?
How reflected light can be reflected again? Reflected Light can be Reflected Again When two mirrors are placed opposite to each other, the first mirror reflects light that falls on its surface. The periscope makes use of this concept by using two plane mirrors. Periscopes are used in submarines, tanks and also by soldiers in […]
How long does it take for iron to rust in salt water?
How long does it take for iron to rust in salt water? it will start almost immediately, and may progress at a rate of around 1/2mm per year. This rate will vary depending on the alloy and water conditions. How do you speed up the rusting process? Direct sunlight helps speed up the rusting process. […]