¿Qué diferencia existe entre trabajo y potencia? La potencia es el ritmo al que se hace una actividad, también llamada trabajo, y para entrenarla es necesario preparar ejercicios específicos. Parece sencillo, pero son muchos los que meten la pata. ¿Qué pasa si el trabajo es cero? El trabajo es cero si la fuerza es perpendicular […]
How can I improve my solar cooker?
What attaches muscles to bone?
What attaches muscles to bone? A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure. Do muscles work in pairs? Skeletal muscles only pull in one direction. For this reason they always come […]
What is true about an elliptical orbit?
What is true about an elliptical orbit? When an object moves around another object in an oval shaped path, it is known to be revolving in an elliptical orbit. All planets move in elliptical orbits around the sun. While moving in an elliptical orbit, the velocity of the satellite varies based on its location in […]
Is P-value the same as Z-score?
Is P-value the same as Z-score? p-value indicates how unlikely the statistic is. z-score indicates how far away from the mean it is. There may be a difference between them, depending on the sample size. For large samples, even small deviations from the mean become unlikely. How do you calculate a critical value? To find […]
What is B1 inhomogeneity?
What is B1 inhomogeneity? B1 inhomogeneity is one of the major drawbacks in high field MRI. The non-uniformity causes regions of increased and decreased signal intensity in the images. None of existing methods can perfectly correct the non uniformity. What is the flip angle in MRI? The flip angle is an MRI phenomenon by which […]
What does the slope of position time graph indicate?
What does the slope of position time graph indicate? The slope of a position graph represents the velocity of the object. So the value of the slope at a particular time represents the velocity of the object at that instant. Can a position time graph be negative? Yes, when the velocity of the obect is […]
What does the cell membrane do in a plant cell?
What does the cell membrane do in a plant cell? The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the […]
What two atoms have the same mass?
What two atoms have the same mass? Two atoms with the same atomic number, but different mass numbers (same number of protons, different number of neutrons), are called isotopes, or isotopic nuclides. Having different numbers of neutrons changes the mass of these atoms, so isotopes have slight variations in their physical and chemical behavior. What […]
Why does electricity go to Earth?
Why does electricity go to Earth? Electricity (whether it comes from lightning or any other source) heads to the ground as a result of some very basic forces. Basically, clouds filled with tons of negatively charged particles are attracted to the positively charged ground. How can I charge my phone without power? If you lose […]