Category: Physics

How do you find the density of g mL? The formula for density is the mass of an object divided by its volume. In equation form, that’s d = m/v , where d is the density, m is the mass and v is the volume of the object. Is kg/m 3 the same as g […]

Can you sanitize tennis balls? Wash them in a bucket of soapy water Fill a bucket (or the kitchen sink) with warm water, and add either dishwashing soap or laundry detergent. Be sure to use a mild detergent or soap, and a little goes a long way! Scrub the tennis balls with a rag or […]

Why do you lift your feet over train tracks? #3: Picking your feet up when you cross a bridge or railroad But some drivers believe that you have to lift your feet off the floor of the car when you go over a bridge or railroad tracks. Apparently, it’s believed that if you don’t, you’ll […]

What are the two types of pressure? There are two basic pressure types – absolute and gauge – distinguished by what pressure they are compared to, which is called the reference pressure. What is the best way to measure air temperature? How to Measure Temperature Correctly Place the thermometer 5 feet above the ground (+/- […]

What is a rotor speed? The rotor speed, rotational speed of the rotor, is usually measured in rotations per minute (rpm) or tip speed in feet per minute. How do you measure rotor speed? 3 Answers. The synchronous speed of the rotor in RPM N = 120f/P where f is the frequency of the stator […]

How much radiation is a Millicurie? Radiation Measurements Conversions Conversion Equivalence 1 millicurie (mCi) = 37 megabecquerels (MBq) 1 rad = 0.01 gray (Gy) 1 rem = 0.01 sievert (Sv) 1 roentgen (R) = 0.000258 coulomb/kilogram (C/kg) How much Curie is lethal? For example, the median lethal dose (LD-50) for ingested polonium-210 is 240 μCi; […]

What kind of pitch did Noah use? Gopher wood or gopherwood is a term used once in the Bible for the substance from which Noah’s ark was built. Is Oak SAP edible? You can also cut the bark into strips and boil like noodles to add to soups and stews or simply eat it raw. […]

What did the Sioux worship? THE RELIGION AND RITUALS OF THE TRIBE Animism is the religion of the tribe. They believe that all-natural objects such as plants, animals, trees, and more have souls and spirits. The Lakota Sioux have their own mythology. What kind of jobs do the Sioux have today? Many are engaged in […]

How did the Clean Air Act get passed? After several years of proposals and hearings, Congress passed the first federal legislation to address air pollution in 1955. EPA has administered the Clean Air Act ever since, and Congress added major regulatory programs in 1977 and 1990. What year did the Clean Air Act passed? 1970 […]

What is the oldest province in Virginia? Blue Ridge geologic province What is the largest physiographic province on earth? Piedmont Which Virginia province is best for farming? One is Rockingham County, known as one of the top 100 counties in the United States for agricultural production. It is famous for its poultry output — turkeys, […]