How do you find work when given mass and distance? Work is the force exerted on an object times the distance over which the force is exerted: W = Fx, where W is the work in Nm = Joule. Work done to lift an object of mass m a height h: W = Fgh = […]
What is the difference between disc Plough and disc harrow?
How did President James K Polk try to resolve the disagreement between Mexico and the United States?
How did President James K Polk try to resolve the disagreement between Mexico and the United States? Polk declared that the border between the United States and Mexico extended to the Rio Grande. He ordered American troops to cross into the contested land as a “defensive” act. In March 1846, General Zachary Taylor led American […]
What causes excessive wear on the inside of front tires?
What causes excessive wear on the inside of front tires? When the inside tread on your front tires is wearing faster than the center or the outside edge, the problem is likely a “camber” problem. If the bottoms of the tire lean to the outside, you have negative camber. Negative camber angle can cause excessive […]
Where is an exit sign required?
Where is an exit sign required? Must be installed on, above or adjacent to each door providing direct egress from a storey to an enclosed or external stairway, passageway or ramp serving as a required exit; and on, above or adjacent to a door to an external access balcony leading to a required exit. What […]
How does air content affect concrete strength?
How does air content affect concrete strength? How does air content affect strength? A. Intentionally entrained air voids improve the resistance of concrete to damage from cycles of freezing and thawing. Any air voids reduce the strength of concrete, with about a 5% reduction in strength for each 1% increase in the volume of air […]
What did mechanical engineers invent?
What did mechanical engineers invent? Catapults, battering rams, chariots and siege towers were all the products of mechanical engineering. Many of the machines of modern warfare, such as armored vehicles, ships, aircraft, artillery and firearms, also owe their existence to mechanical engineers. What are the new technologies in mechanical engineering? 6 Mechanical Engineering Innovations that […]
What are the best earrings for very sensitive ears?
What are the best earrings for very sensitive ears? The best earrings for sensitive ears are generally made with gold, platinum, or silver. Make sure you buy earrings that are 14k gold or above or sterling silver 925 to avoid the possibility of nickel being mixed in. What kind of earrings are hypoallergenic? Your best […]
Why is dimensional tolerance important?
Why is dimensional tolerance important? Dimensional tolerances are key in making parts right. Using them appropriately will save time spent coordinating with the manufacturer, circumvent design issues, and reduce unnecessary costs. However, while dimensional tolerances are important, so are geometric tolerances in fully defining parts. What is dimensional tolerance and why is it important? If […]
Which is stronger LDPE or HDPE?
Which is stronger LDPE or HDPE? LDPE is softer, more flexible and melts at a lower temperature than HDPE. LDPE is used in sandwich bags and other types of packaging. HDPE is harder, has a higher chemical resistance and can withstand higher temperatures. What is the difference between HDPE Lldpe and LDPE? This gives LLDPE […]