Answer:
b) heat flows from the hot object to the cool surface.
Explanation:
This is because of thermal conductivity:
Heat travels into cooler objects until the temperature is even, but as it does so, the cooler object cools down the hot object and the hot heats the cool.
please help me A right triangle with vertices ,J (0.2), K(0,0), L(9,0) and is rotated around the -axis.
A. Use complete sentences to describe the resulting solid. Include the specific measurements for the solid’s dimensions such as height, width, length, radius, etc.
B. To the nearest tenth of a cubic unit, what is the volume of the resulting three-dimensional figure? Include all of your calculations.
A. The radius of the cone is the distance from the -axis to the edge of the triangle KL, which is 9 units.
B. The volume of the resulting three-dimensional figure is approximately 5.31 cubic units.
A. When the right triangle with vertices J(0,2), K(0,0), and L(9,0) is rotated around the -axis, the resulting solid is a cone with a height of 2 units and a radius of 9 units.
The triangle JK is the base of the cone, and the axis of rotation is perpendicular to the base and passes through the point L.
The vertex of the cone is located at the point (0,-2), which is the projection of J onto the -axis.
The radius of the cone is equal to the slant height, which can be found using the Pythagorean theorem to be 9 units.
B. To find the volume of the resulting cone, we need to use the formula
V = (1/3)πr²h
where r is the radius of the circular base and h is the height of the cone.
The radius of the circular base is given as 9 units, and the height of the cone is 0.2 units.
Substituting these values in the formula, we get:
V = (1 ÷ 3) × π × (9²) × (0.2)
V = 5.31 cubic units (rounded to the nearest tenth)
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What would be the possible solutions to the negative impact caused by humans activities in the river?
Tge use of conventional energy sources in south africa led to loadshedding that was declared by President Cyril Ramaphosa as a state disaster which poses a threat to the energy management. Outline the causes, impact, and sustainable management strategies in south africa as a whole or preferred area of study
The use of conventional energy sources in South Africa, such as coal, has led to load shedding due to power outages.
How has Load Shedding affected the nation ?Eskom, the state-owned electricity supplier, has faced difficulties in keeping up with South Africa's mounting demand for power. Factors attributing to this dilemma include outdated infrastructure and insufficient investment towards constructing new plants, as well as poor management of the energy sector.
The repercussions have been enormous, shuttered businesses leading to economic instability and job losses, disarray in basic services such as lighting, heating, and communication, ultimately afflicting individuals' quality of life.
Nonetheless, promising solutions exist. The government has pledged to elevate renewable energy shares within the country's energy mixture - notably, through solar and wind energy. Nor is it only at a national level; promoting lower power consumption by increasing energy efficiency in homes, commerce centers, and public constructions can also curtail energy use whilst curtailing enforced blackouts or load shedding.
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Explain why Hard Wood considered to some is an unsustainable material. D&T
Explain why Hard Wood considered to some is an unsustainable material. (6 Marker question for D&T GCSE)
Why Hard Wood considered to some is an unsustainable material
DeforestationSlow Growth and RegenerationIllegal LoggingWhy Hard Wood considered to some is an unsustainable materialDeforestation: Hardwood extraction can accelerate deforestation, the overall mass clearance of woodlands.
Slow Growth and Regeneration: Several hardwood species attain maturity after decades or centuries - leading to a much slower process of regeneration than other kinds of wood.
Illegal Logging: Throughout numerous hardwood-producing regions, there is an overwhelming prevalence of illegal logging — the unauthorised harvesting of trees from protected zones or without accurate permits.
Unsustainable Logging Practices: Even when legal logging practices are followed, methods such as clear cutting (leveling all trees in a zone) may lead to destabilizing outcomes for water cycles, soil erosion, and habitat deprivation.
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Where is the youngest tectonic plate material found in the Atlantic basin
Answer: Mid-Atlantic Ridge
Answer:
Where plates move apart, new crustal material is formed from molten magma from below the Earth's surface. Because of this, the youngest sea floor can be found along divergent boundaries, such as the Mid-Atlantic Ocean Ridge.
explain the problems facing industrialization sectors in new england
Answer:
The industrialization sectors in New England faced several problems during the 19th century as the region underwent significant economic and social changes. One of the primary challenges was competition from other regions, particularly in the Midwest, which had cheaper land, a more abundant labor supply, and better transportation infrastructure. This led to a decline in New England's manufacturing sector, particularly in the textile industry.
Another major challenge was the scarcity of natural resources in New England, particularly coal and iron. As a result, manufacturers had to rely on imported raw materials, which drove up costs and made them less competitive with other regions.
Additionally, labor unrest and strikes were common in New England's industrial sector, as workers sought better wages, working conditions, and job security. This led to tensions between labor and management and resulted in periodic disruptions to production.
Finally, environmental concerns also emerged as a problem for New England's industrialization sectors. Factories and mills polluted rivers and streams with chemicals and waste, leading to public health concerns and ecological damage.
Overall, the industrialization sectors in New England faced a range of challenges that affected their competitiveness, profitability, and sustainability, and these challenges persisted into the 20th century.
Why can category 5 tropical cyclones be more destructive (damaging) than category 1 tropical cyclones.
Answer:
Category 5 tropical cyclones are tropical cyclones that have 1-minute maximum sustained wind speeds of at least 137 knots (254 km/h; 158 mph; 70 m/s)12, while Category 1 tropical cyclones have 1-minute maximum sustained wind speeds between 64 and 82 knots (74 and 94 mph; 119 and 152 km/h; 33 and 42 m/s)34. Therefore, Category 5 tropical cyclones are much stronger and faster than Category 1 tropical cyclones.
Category 5 tropical cyclones can cause catastrophic damage to people, animals, buildings, infrastructure, and the environment. They can produce very high storm surges, extreme winds, heavy rainfall, flooding, landslides, and tornadoes. They can also disrupt power, water, communication, and transportation systems for weeks to months. Category 1 tropical cyclones can also cause damage, but usually less severe and more localized. They can produce moderate storm surges, strong winds, moderate rainfall, flooding, and some tornadoes. They can also cause some power outages and minor damage to buildings and vegetation hope this helps!!
