Category: Engineering

What is a FEMA zone? Flood zones are geographic areas that the FEMA has defined according to varying levels of flood risk. These zones are depicted on a community’s Flood Insurance Rate Map (FIRM) or Flood Hazard Boundary Map. Each zone reflects the severity or type of flooding in the area. Does FEMA still provide […]

How do you get permanent marker off a mailbox? Gently rub a bit of toothpaste onto the stain with your finger and then use a wet rag to gently rub the stain away. In addition, some have had success using an Aerosol Hairspray by spraying the spot and then wiping away. Finally, some have also […]

How long does it take for baking soda to whiten teeth? Because baking soda removes discoloration from the surface of your teeth, it won’t remove deeper stains. According to the Mayo Clinic, toothpaste containing baking soda can help coffee and smoking stains, and it could take between two to six weeks for you to notice […]

Is Princess Peach a bad guy? Let’s be honest, Princess Peach is a terrible ruler. She is a bad friend, an even worse girlfriend, and one of the most irritating enemies that one can play against in Smash. She has been a thorn in our side since her first appearance and as time has gone […]

Is all rubber toxic? While rubber includes some natural rubber (called latex) from rubber trees, it also contains phthalates (chemicals that affect hormones, see Phthalates and Children’s Products), polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs) and other chemicals known or suspected to cause adverse health … Does recycled rubber cause cancer? After examining the […]

Why does salt make gummy bears shrink? in salt water, what happens? because there are more salt molecules in the salt water than in the Gummy Bear. The Gummy Bear grows shrinks! Why do gummy bears shrink? In Salt and Sugar: The water will move out of the gummy bear to the sugar and salt […]

How many wildlife are there in Singapore? Singapore has an estimated 23,000–28,000 species of terrestrial organisms and 12,000–17,000 marine organisms, making up over 40,000 kinds of non-microbial organisms. What kind of animals live in Singapore? What Animals Live In Singapore? Indo-Pacific Bottlenose Dolphin. Leopard Cat. Banded Surili. Dugong. Reticulated Python. Sunda Pangolin. Crab-eating Macaque. Colugos. […]

Is chlorine a substance or a mixture? All matter can be classified as either a substance or mixture. A substance is an element or a compound. A mixture is heterogeneous or homogeneous…. Type of matter Substance Mixture Chlorine E Water C Soil M HETEROGENEOUS Sugar water M HOMOGENEOUS Why is aluminum a pure substance? Elements […]

How do you calculate cutoff frequency for a low pass filter? The cut-off frequency or -3dB point, can be found using the standard formula, ƒc = 1/(2πRC). The phase angle of the output signal at ƒc and is -45o for a Low Pass Filter. What is cut-off frequency in low pass filter? The cutoff frequency […]

What do lotus flower colors mean? Lotus Flower Color Meaning The white lotus flower and pink lotus flower from the Nelumbo family are seen as meaning purity and devotion. More passionately colored red, purple, and blue Lotus flower blooms can take on a spiritual meaning of ascension, enlightenment, or rebirth. Is there a purple lotus […]