Related Questions

The centre of gravity of a quadrant of a circle lies along its central radius at a distance of
A 0.2 R
B 0.4 R
C 0.3 R
D 0.6 R
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.
A $$\frac{{3{\text{r}}}}{8}$$
B $$\frac{{4{\text{r}}}}{{3\pi }}$$
C $$\frac{{8{\text{r}}}}{3}$$
D $$\frac{{3{\text{r}}}}{{4\pi }}$$
Radius of circle center 0 is 3 times the radius of circle center C. Angle ACB -A angle POQ. If the shaded are of circle C is 2 then what is the area of then shaded part of circleO?
A 36
B 9
C 12
D 18
The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity.
A Zero
B Minimum
C Maximum
D None of these
ABCD is a square of side 10. AFC is an are of a circle with the center at D and radius 10. AGC is an are of a circle with the center at B and radius 10. Find the area of AFCG/
A 50 -100pie
B 25 -100 pie
C 100-25 pie
D 100-50pie
The radius of circle A is r, and the radius of circle B is 3/4r. What is the ratio of the area of circle A to the area of circle B?
A 16 to 9
B 9 to 16
C 1 to 4
D 4 to 3
ABCD is a square of side 8 AFC is an are of a cricle with the center at D and radius 8 . AGC is an are of a circle with the center at B and radius 8. Find the area of AFCG.
A 32 pie -32
B 64 pie-64
C 64-32pie
D 32 pie - 64
q মানের পাঁচটি ধনাত্নক চার্জ r ব্যাসার্ধের একটি বৃত্তের পরিধি বরাবর প্রতিসমভাবে সাজানো হলো। বৃত্তের কেন্দ্রে বৈদ্যুতিক ক্ষেত্রের মান কত? (Five positive charges of magnitude q are arranged symmetrically along the circumference of a circle of radius r. What is the magnitude of the electric field at the center of the circle?)
A q44πε0r2
B q54πε0r2
C 5q4πε0r2
A rectangular field of 200m by 120m has two roads running along its center, one along the length and the other along the width. If the width of the roads is 5m, what is the area covered by the two roads?
A 1575 sq.m.
B 1600 sq.m.
C 1550 sq.m.
D 400 sq.m.
In the circle below, if 0 is the center of the circle, What fractin of the circle is shaded ?
A 112th
B 110th
C 18th
D 16th

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