Category: Physics

Are sweaters conductors? The sweater is an insulator. The wall is an insulator. Is Wool an electric conductor? Wool is a conductive material, which means it readily gives away its electrons. Is a sweater a good insulator? Results: Fabrics like wool and fleece are great insulators and will keep your body warm over an extended […]

What level of radiation is harmful? To cause death within hours of exposure to radiation, the dose needs to be very high, 10Gy or higher, while 4-5Gy will kill within 60 days, and less than 1.5-2Gy will not be lethal in the short term. However all doses, no matter how small, carry a finite risk […]

What is the equation for total energy? Equations Equation Meaning in words E m = K + U E_\text m = K +U Em=K+U The total mechanical energy of a system is the sum of the total kinetic energy and total potential energy. How do you calculate time? To solve for time use the formula […]

What are 5 examples of non-renewable resources? Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs. What are the examples of renewable […]

What animals can see humans glow? Bioluminescent creatures such as glowworms, fireflies, and plankton are a popular subject with photographers with the low-light abilities of modern digital cameras. Are humans glow in the dark? The human body literally glows, emitting a visible light in extremely small quantities at levels that rise and fall with the […]

What is a good transition word? And, in addition to, furthermore, moreover, besides, than, too, also, both-and, another, equally important, first, second, etc., again, further, last, finally, not only-but also, as well as, in the second place, next, likewise, similarly, in fact, as a result, consequently, in the same way, for example, for instance. What’s […]

Why do whales moan? Various baleen whales moan, but only the males of a few species really sing well: humpback, minke, some blue and fin whales, and the more distantly related bowhead whales. It has been suggested that, when underwater, air can be moved between these sacs and the lungs, allowing whales to sing without […]

Does magnitude have a sign? A vector is a quantity described by a magnitude and a direction. The magnitude is always +ve or zero. A -ve sign in front of a vector indicates the same magnitude but in the opposite direction. It has a magnitude (which is >= 0) and a direction. What is the […]

How much electricity does 1200 watts use? Appliance Electricity Usage Appliance Typical Consumption Per Hour Cost Per Hour (at 10 cents per kilowatt-hour) Space heater 1,500 watts 15 cents Hair dryer 1,200 watts 12 cents Electric range burner 1,000 watts 10 cents Refrigerator 1,000 watts 10 cents How much power does a 700 watt microwave […]

Are Volvos really safer? Now that we have established why Volvo is considered the safest automotive manufacturer around, the 2019 XC40 is the safest compact SUV, having been awarded a 2019 IIHS Top Safety Pick Plus. The 2019 XC60 is the safest midsize luxury SUV, having been awarded a 2019 IIHS Top Safety Pick. Has […]