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What is the distance between the pivot point and the marking point of a compass when drawing a circle called?
The radius
How do you calculate area wiped by windscreen wiper?
Measure pivot point to bottom of blade and pivot point to blade tip, measure angle from extreme left to extreme right of pivot point in degrees. If not possible measure the distance from top left point of blade on windscreen to top right point on windscreen.Transfer measurements to large piece of paper and draw a fan shape to represent the readings taken. Large circle area is pivot to blade tip, squared x 3.142 small circle area is pivot to blade bottom ,squared x3.142 Subtract small circle area from large circle area. This is a full 360 degree blade sweep area. Now take 360 degrees and divide by the angle of sweep, for example if sweep angle is 60 degrees:- 360/60 = 6 Divide answer by 6 to get area cleaned by wiper. Multiply by 2 for both blades in this example.
How do you balance a seesaw?
Simple ..put equal weight at each end, equal distance from the pivot.
What factors affect the period of a pendulum?
In a simple pendulum, with its entire mass concentrated at the end of a string, the period depends on the distance of the mass from the pivot point. A physical pendulum's period is affected by the distance of the centre-of-gravity of the pendulum arm to the pivot point, its mass and its moment of inertia about the pivot point. In real life the pendulum period can also be affected by air resistance, temperature changes etc.
A compass is actually a?
C. small magnet on a pivot.
