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Correct option isC83πab x=acos 3 t∴ dtdx =−3acos 2 tsint, y=asin 3 t∴ dtdx =+3asin 2 tcostThe closed curve is traced as t varies from 0 to 2π∴ x dtdy −y dtdx =3absin 2 tcos 2 t (A)∴ Required area = 21 ∫ 02π (x dtdy −y dtdx )DT = 23ab ∫ 02π sin 2 tcos 2 tdt = 23ab ×4∫ 0π/2 sin 2 tcos 2 tdt = 23ab ×4× 4×21×1 × 2π ( Using Wallis FORMULA). = 83abπ Explanation:please mark me as Brainaliest

NoExplanation:They are HARMFUL for our ENVIRONMENT

If you push a wall with force F than wall will APPLY a force F on you. which is EQUAL but direction is opposite.∙ when you walk on earth , your weight MG is in DOWNWARD direction and same force is APPLIED by earth on you but this force in opposite direction. Magnitude is same.

tion:Current = quantity of flowing CHARGE/time.∆(delta) - this is used to SHOW a small or BIG change is a quantity.∆q = change in AMOUNT of flowing charge .∆t = change in time hence , I = Q/T = ∆Q/∆Trefer to the attachment for average current definition . They weren't allowing me to POST it

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raph of v³ VS t' for a particle moving along a straight line is shown in the figure.To find:ACCELERATION at t = 4 SEC?Calculation:So, the slope at t = 4 sec (i.e. point P) will be :At point P , v³ = ⅛ => v = ½ m/s , hence v² = ¼.So, acceleration is 1 m/s².

mdjdnExplanation:hdkdkbshsjsksh shsnjsjsjeheh shsnjsjsjeheh sbsjejje the FIRST time in the FUTURE PLEASE the first time I had a GOOD morning

AssertionThe current flowing through each resistor is same when CONNECTED in series.Explanation:The voltage DROP ACROSS each resistor REMAINS the same when connected in parallel.

four timesExplanation:HEAT produced is DIRECTLY PROPORTIONAL to the square of current. If current I is doubled, heat H will be four times.

Explanation:The Total distance covered by the CAR is 875mGven the speed-time graph of a car.From the graph we can write the equation for speed with respectto time..We KNOW Speed = distance/timeDistance speedx time.In the glven scenarlo, It is the area under the speed curve, the straightline.Area Area of AAGF + Area of rectangle AGOHArea 0.5 x 50 x 25 +5 x 50Area 625+ 250 875m.Total Distance covered by the car is 875m.

the APPROXIMATION of weight 800G is 1 kgExplanation:because 1KG is the closest and simplest form in which the objects weight can be estimate

ocity of the mass on a spring, OSCILLATING in SHM, can be found by taking the DERIVATIVE of the position equation: v(t)=dxdt=ddt(Acos(ωt+φ))=−Aωsin(ωt+ϕ)=−vmaxsin(ωt+φ). ... The MAXIMUM VELOCITY occurs at the EQUILIBRIUM position (x=0) when the mass is moving toward x=+A .

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*MAGNETIC *CHEMICAL*ELECTROMAGNETIC *

Here are 13 lean protein foods you should consider.White-Fleshed Fish. SHARE on Pinterest. ...Plain Greek Yogurt. ...BEANS, Peas and Lentils. ...Skinless, White-Meat Poultry. ...Low-Fat Cottage Cheese. ...LITE Tofu. ...Lean Beef. ...Powdered Peanut Butter.

Surface tension can be considered as an incident that occurs in LIQUIDS due to the unbalanced intermolecular FORCES, whereas viscosity occurs due to forces on MOVING molecules.• Surface tension is present in both moving and nonmoving fluids, but viscosity only appears in moving fluids.Explanation:HOPE it HELP you ...

-Acceleration=a=5m/s^2initial velocity=u=0m/sDistance traveled=s=100ftConvert to METERS FINAL velocity=v=?ACCORDING to third equation of kinematics

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Haan hain.. Naa.. The resistance of a CONDUCTOR DEPENDS on the cross SECTIONAL area of the conductor, the length of the conductor, and its resistivity.

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increases FOUR times because heaat produces is DIRECTLY prpotional to the SQUARE of cureent passing throug i

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धातुओं में मुक्त इलेक्ट्रॉन , बन्द बर्तन में भरी गैस के अणुओं की तरह व्यवहार करते हैं तथा धातु के भीतर स्थित धन आयनों के बीच खाली स्थान में उच्च वेग (105 मीटर / सेकण्ड ) से अनियमित वेग का चालक में धारा प्रवाह के लिये कोई योगदान नहीं होता , चालक में वैधुत धारा प्रवाह मुक्त इलेक्ट्रॉनों के अनुगमन वेग के कारण होता है ।

The CODATA VALUE of the BOHR radius (in SI units) is 5.29177210903(80)×10−11 m.

tion:The VISIBLE wavelengths cover a range from APPROXIMATELY 0.4 to 0.7 µm. The longest visible wavelength is red and the shortest is VIOLET. Common wavelengths of what we perceive as particular COLOURS

keno KI aakasher RONG NIL hoiExplanation:please MARK me as BRAINLIEST

Surface tension is the property of a liquid where the surface DISPLAYED by its acting as if it were a stretched elastic membrane. This phenomenon can be observed in the nearly spherical shape of small drops of liquids and of soap bubbles. The RAZOR blade is not floating: if pushed through the surface, it sinks through the water. Explanation:HOPE it's helpful!!

endulum, body suspended from a fixed point so that it can swing back and forth under the INFLUENCE of gravity. Pendulums are USED to regulate the movement of clocks because the INTERVAL of time for each complete OSCILLATION, called the period, is constant.Explanation: