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Differentiate Angle of reflection from angle of incidence?
The 'normal' direction is the direction perpendicular to a surface. Think of a stick with one end of it glued to a mirror. When a beam of light or a tennis ball hits the surface, the 'angle of incidence' is the angle between the normal and the direction the ball came from. The 'angle of reflection' is the angle between the normal and the direction the ball will take after the bounce. The angle of reflection will be equal to the angle of incidence. Knowing this, you can always place your bank shot exactly where you want it to go after the bounce.
What is the supplement of an 82 degrees angle?
the supplement of an 82 degrees angle would be 98 degrees. To find the supplement of an angle, take the degrees of the angle you were given and subtract it from 180.
How do you find the area between a given curve and x-axis?
Take the definite integral (and your bounds should be the two places where the curve crosses the x-axis).
What is meant by flexural axis?
basically,when you have bending suppose you take beam(I-section) and an axis along the beam now, 1.curl you fingers in the direction of bending 2.point the thumb perpendicular to your fingers 3.thumb would give you the flexural axis(bending axis)
Does the Earths rotation take place on an imaginary line called its axis?
Yes, the Earth's rotation occurs on an imaginary line running through its North and South Poles called its axis. This axis is tilted at an angle of approximately 23.5 degrees relative to its orbit around the Sun, leading to the changing seasons.
How should we analyze an oblique impact if the direction of line of impact is not known?
As we know that, in an oblique impact, the direction of impact is always along the line of impact, but not perpendicular to it.. And it's obvious that the line of impact lies in the x axis passing through the center of mass of the objects... So, if we don't know the direction of the line of impact, then we can easily take it along the "x" axis....
How do you find the measure of the angle with only the given sides measure?
take the number and divide it by 180 if it's a triangle
How do you find angle of elevation when given hypotenuse and a base?
Given the hypotenuse and the base ...-- divide the (base) by the (hypotenuse); get a number less than '1'.-- the number is the 'cosine' of the elevation angle.-- either take the cos-1 of the number on a calculator, which is the angleOR-- look up the number in a table of cosines and see what angle it represents.
Examples of when a force causes an object to stop moving?
Take a ball and push it an angle yo direction of motion.what do you observe? Answer-change the angle of your hand with respect to the direction of motion of the ball.Does yoo effort result in change in direction of motion of ball?
What is the reference angle for -140 degrees?
in order to find the reference angle, an angle less than or equal to 90 degrees formed by the x-axis and the terminal side of an angle, one needs to first find what quadrant on the coordinate plane the angle belongs to. The negative (-) sign in -140 refers to the direction 360 degree turn begins at (and therefore the quadrant it begins at). Instead of taking the regular backwards "C", counterclockwise direction, the turn begins clockwise. To convert it, simply add 360 degrees, to get 220 degrees, an angle in the third quadrant. These are the guidelines to follow when finding reference angles: If angle, A, is in first quadrant then the reference angle will be itself as it is already 90 degrees or under. If angle, A, is in second quadrant then the reference angle will be 180 - A . If angle, A, is in third quadrant then the reference angle will be A - 180 . If angle, A, is in fourth quadrant then the reference angle will be 360 - A " These subtractions are all in reference to the nearest angle of a quadrant and are in degrees. Being in the third quadrant, take the angle, A, and subtract 180 from it to get: 220 - 180 = 40 Thus, the reference angle for -140 degrees is 40 degrees. Follow the same directions for other angles, first determining whether the angle needs to be converted into a positive value (counterclockwise), then locate the quadrant and use the rules above for the specific angle(s) being looked at and asked for.
How many degree of freedom does a physical structure have?
Zero. Assuming that the physical structure is FIXED (as in a building or something). It cannot move in the x-direction (sideways), the y-direction (upwards), or be rotated about an axis (z-direction). Take the front wheels of a car, for instance. The can move left and right (x-direction) and can rotate (z-direction), but cannot move upwards.
At what angle does the earth rotate on its axis?
The Earth rotates on its axis at an angle of approximately 23.5 degrees. This tilt is responsible for the changing seasons as different parts of the Earth receive more or less sunlight throughout the year.
