When did fire alarms become standard? 1967 Why do schools have fire alarms? A fire alarm system is one such system that can help a school keep their students safe and secure. Fire Protection Questions? In the event of a fire, a fire alarm system must be able to quickly alert all students and faculty […]
Do I need a Licence to cut hair at home?
Can birds interbreed like dogs?
Can birds interbreed like dogs? A few bird species are closely-related enough to interbreed, but unlike dogs, the category “birds” includes many, many different species that can’t interbreed. In general, it’s a “species” thing. The definition of species tends to be narrow enough that only animals of the same species can mate successfully. Can you […]
What causes a drought to happen?
What causes a drought to happen? The Short Answer: A drought is caused by drier than normal conditions that can eventually lead to water supply problems. Really hot temperatures can make a drought worse by evaporating moisture from the soil. A drought is a prolonged period with less-than-average amounts of rain or snow in a […]
How do you wish someone a happy new year in Thai?
What are excavators made from?
What are excavators made from? The booms and arms of backhoes and excavators, since they need considerable tensile strength, are often made of low-alloy steels that have been heat-treated to get the needed tensile strength—50,000-100,000 psi—and toughness levels. What is the digging part of an excavator called? The three main sections of an excavator are […]
What does the Protea symbolism for South Africa?
What does the Protea symbolism for South Africa? The Protea symbolizes the continuous change and gradual transformation of the variety of cultures among the people of South Africa. This mimics the diverse forms of colors the protea possesses from, red, pink, to yellow and it’s over 80 varieties grown in South Africa’s horticultural firms. What […]
How does spending affect the economy?
How does spending affect the economy? Even a small downturn in consumer spending damages the economy. As it drops off, economic growth slows. Prices drop, creating deflation. If slow consumer spending continues, the economy contracts. Why is spending important for the economy? If consumers spend too much of their income now, future economic growth could […]
What is impulse in science?
When was auto transmission invented?
When was auto transmission invented? 1921 Who invented first automatic transmission? Richard SpikesHoward Frederick Hobbs What was the first transmission? The 1904 Sturtevant “horseless carriage gearbox” is often considered to be the first true automatic transmission. The first mass-produced automatic transmission is the General Motors Hydramatic three-speed hydraulic automatic (using a fluid coupling instead of […]