Category: Physics

What are the final stages of FTD? In late stage FTD symptoms include: A gradual reduction in speech, culminating in mutism. Hyperoral traits. Failure or inability to make motor responses to verbal commands. Akinesia (loss of muscle movement) and rigidity with death due to complications of immobility. What are the final stages of frontotemporal dementia? […]

What is magnitude of the image? in magnetic resonance imaging, an image formed from the amplitude of the signal, distinct from the phase information. What is the importance of magnitude and phase? Both the magnitude and the phase functions are necessary for the complete reconstruction of an image from its Fourier transform. Figure(1. 5a) shows […]

What force acts on the marble to slow it to a stop? Friction What was the force that was acting on the marble? A “push” centripetal force acted on the marble: this force, supplied by the bottom of the cup, kept the marble going in a circular path and not flying away in a straight […]

What is the most energy efficient heating system for homes? Active solar heating may be the most efficient option for heating your home. Electric resistance heating can be expensive to operate, but may be appropriate if you heat a room infrequently or if it would be expensive to exte… What is the most economical heating […]

What is the focal point of an artwork? The focal point of a painting is the area in the composition to which the viewer’s eye is naturally drawn. It is essential to classic art, although abstract artists may deliberately create compositions without focal points. Focal points may be of any shape, size or color. Is […]

How do I know if my glasses are plastic or glass? All you need to do is tap a lens against your teeth, a tool that’s always available. If the lenses make a soft ringing sound, they are more likely to be glass. If they make a soft *thunk*, then they are definitely plastic. Do […]

Can water be affected by a charged rod? Yes! Water is a polar molecule which means that one side is postively charged and the other negatively charged. A charged rod can attact one side of the water molecule. When you run a thin stream of water and place a charged rod near it, the water […]

How do you measure high temperature? Pyrometer, device for measuring relatively high temperatures, such as are encountered in furnaces. Most pyrometers work by measuring radiation from the body whose temperature is to be measured. How do you measure temperature over 100 degrees? Fahrenheit and Celsius are two different scales for measuring temperature. A thermometer measuring […]

How many circles do you need to balance the scale? Since there are 3 purple circles, we need 3 × 2 = 6 3 \times 2 = 6 3×2=6 green squares in order to balance the scale. What is a balance beam scale? A device for weighing. It has a balanced beam and two pans. […]

When the economy is at full employment the unemployment rate is zero? Full employment does not mean zero unemployment, it means cyclical unemployment rate is zero. At this rate, job seekers are equal to job openings. This is also called the natural rate of unemployment (Un) where real GDP is at its potential GDP. When […]