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 frequencies are dangerous?
What frequencies are dangerous? The most restrictive limits on whole-body exposure are in the frequency range of 30-300 MHz where the RF energy is absorbed most efficiently when the whole body is exposed. For devices that only expose part of the body, such as mobile phones, different exposure limits are specified. What is the range […]
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 […]
Which metals are poor conductor of heat?
Which metals are poor conductor of heat? Metals like mercury, lead, alloys of iron and chromium, titanium and stainless steel are poor conductors when compared to silver, copper and gold. Is fluorine a conductor of heat and electricity? So, does Fluorine conduct electricity? Fluorine, like other non-metals (except graphite and silicon) does not conduct electricity. […]
What are the pros and cons of being a ultrasound technician?
What are the pros and cons of being a ultrasound technician? An ultrasound technician uses sonography equipment to diagnose medical conditions. Being an ultrasound technician is very fulfilling, and this profession has many benefits that include job satisfaction and a good salary. Like all jobs, however, there are downsides, such as physical stress and pressure. […]
What is the significance of the play-within-a-play in Hamlet?
What is the significance of the play-within-a-play in Hamlet? This play-within-a-play not only helps Hamlet to judge Claudius’s guilt, but also acts as a spur for his own revenge: it shows him the murder that was done to his father and the murder that could be done to his uncle. Why do so many actors […]
How are ternary ionic compounds named?
How are ternary ionic compounds named? Summary. Ternary compounds are composed of three or more elements. Ternary compounds are named by stating the cation first, followed by the anion. Positive and negative charges must balance. What are ternary ionic compounds? A ternary ionic compound is an ionic compound composed of three elements. In a typical […]
Is black a saturated color?
Is black a saturated color? Full saturation represents a pure rainbow color. Lower saturation means the color becomes washed out. No saturation means the light is some shade of gray (ranging from black to white). A black-and-white photograph has no saturation. What is darkness made of? Most scientists think that dark matter is composed of […]
What does arranging figures in a pyramid shape indicate?
How far away from the wall should your spray gun be when spraying?
How far away from the wall should your spray gun be when spraying? about 2 inches How does a spray gun work? Spray gun, painting tool using compressed air from a nozzle to atomize a liquid into a controlled pattern. The spray nozzle operates by impinging high-velocity turbulent air on the surface of filaments or […]