How can you make it safe to exercise on a hot day? Stay safe during hot-weather exercise by drinking enough fluids, wearing proper clothing and timing your workout to avoid extreme heat. Whether you’re running, playing a pickup game of basketball or going for a power walk, take care when the temperature rises. Why is […]
Do gamma rays travel faster than light?
Do gamma rays travel faster than light? Although the energy inherent to light is quantized into discrete energy packets (a.k.a., photons), there are some properties shared by all forms of light. Light of any wavelength, from picometer-wavelength gamma-rays to radio waves more than a trillion times longer, all move at the speed of light in […]
Can the moon crash into Earth?
Can the moon crash into Earth? The Moon will swing ever closer to Earth until it reaches a point 11,470 miles (18,470 kilometers) above our planet, a point termed the Roche limit. Theory dictates they’ll eventually rain down onto Earth’s surface. What would happen if the moon fell? If the Moon did escape from Earth, […]
What forces act on a still object?
What forces act on a still object? Force is defined as a push or pull acting on an object. Forces include gravity, friction, and applied force. Force causes changes in the speed or direction of motion. These changes are called acceleration. What forces can change the shape of an object? When a force acts on […]
What are logical absolutes?
What are logical absolutes? The term ‘the logical absolutes’ refers to what are also known as the ‘laws of thought[1]’. Classical philosophers took these laws to be as follows: The law of identity — All things are equal to themselves. The law of non-contradiction — No proposition can both be and not be (the case). […]
What are the 2 different types of crust?
What are the 2 different types of crust? Earth’s crust is divided into two types: oceanic crust and continental crust. The transition zone between these two types of crust is sometimes called the Conrad discontinuity. Silicates (mostly compounds made of silicon and oxygen) are the most abundant rocks and minerals in both oceanic and continental […]
Does 140 100 require medication?
Does 140 100 require medication? Stage 2 high blood pressure is 140/90 or higher. If you get a blood pressure reading of 180/110 or higher more than once, seek medical treatment right away. A reading this high is considered “hypertensive crisis.” Readings between 120/80 and 129/89 are considered pre-hypertension. Is Stage 2 hypertension an emergency? […]
What is the difference between a lighting designer and master electrician?
What is the difference between a lighting designer and master electrician? The Master Electrician is similar to being the technical director for the Lighting Designer. The M. E. is responsible for insuring the realization of the light plot. He/she is responsible for hanging and circuiting the lighting units according to the plot. How much do […]
What happens if Gulf Stream stops?
What happens if Gulf Stream stops? That could mean rising seas and a hotter Florida. A weaker Gulf Stream would mean higher sea levels for Florida’s east coast. It could lead to colder winters in northern Europe (one reason many scientists prefer the term climate change to global warming). Is it better to live on […]
Which part of human ear converts sound vibrations?
Which part of human ear converts sound vibrations? cochlea When you speak into a cell phone your sound waves must be converted? When you speak into a cell phone, your sound waves must be converted into microwave in order to transmit the signal. The cell phone uses 800 MHz and 1900 MHz frequency range. It […]