A translation.
A circle is a shape that has no particular direction. There is, therefore, no particular direction for anything to be perpendicular to. To that extent, this question is nonsense.Every diameter of a circle bisects it, so just draw any line through its centre!
Because a vector contains information about the direction. A direction, at any particular position is the tangent to the curve and this, by definition, must be straight.
There is insufficient information in the question to answer it. You did not specify how many dice were involved. Please restate the question. In the meantime, I will give a generalized answer. If the probability of rolling a straight is n, then the probability of rolling straight three times in a row is n3. For instance, with three dice, the probability of rolling a straight is 1 in 36, neglecting (i.e. allowing for) wrap-around straights, and ignoring (sorry, but the math is too complex and does not serve the answer anyway) the fact that straights can go in either direction. That 1 in 36 is n=0.02778. The probability of doing that 3 times in a row, then, is 0.00002143.
A single pulley simply changes the direction of the force. A block and tackle or multiple pulleys can offer a mechanical advantage - same as an inclined plane. For the same mechanical advantage, a pulley system may be better because of lower friction.
It would not depend on the direction with respect to the nucleus. The direction of the electron has no effect on the distance of the electron from the nucleus.
In an s orbital, the probability of finding an electron at a particular distance from the nucleus does not depend on the direction in which the distance is measured or the orientation of the orbital. This is because s orbitals are spherically symmetric, meaning the electron has an equal likelihood of being found at any distance from the nucleus in all directions.
Directionality is the term used to describe movement in a particular direction.
They dont have a particular direction,they can face any direction.
Mechanical Advantage=1
A machine that changes only the direction of force has a mechanical advantage of 1. This is because it does not multiply the input force, but rather changes its direction to make work easier.
if only the direction changes,the input force will be the same as the output force.the mechanical advantage will always be 1.
if only the direction changes,the input force will be the same as the output force.the mechanical advantage will always be 1.
A distance in a particular direction is known as a vector. Vectors have both magnitude (size) and direction. Examples include velocity, force, and displacement.
The ideal mechanical advantage of a fixed pulley is 1, as it does not provide any mechanical advantage in terms of force. The direction of the input (effort) and output (load) for a fixed pulley is the same, as the pulley simply changes the direction of the force applied.
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Velocity is the change in position per unit time in a particular direction. It includes both the speed and the direction of an object's motion.