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The frictional force exerted by fluids is ALSO called drag. The frictional force on an OBJECT in a fluid DEPENDS on its SPEED with RESPECT to the fluid. The frictional force also depends on the shape of the object and the nature of the fluid.

Let Distance=D; Speed= S and Time=TIn this CASE, Time T is the same.Distance = Speed x Time or D= SxTIn the FIRST case, D = 1 xT or D =T ——->(1)In the SECOND case, D + 15 = 3 xT or 3 T ——->(2)Using value of D as per (1) in (2),T +15 = 3 T or 2T =15 or T=15/2= 7.5 secondsAs D=S x T, Distance covered in first case = 1m/second x 7.5 second= 7.5 METERS(Also, Distance covered in 2nd case = 7.5 + 15 = 22.5 mteres) MARK me brainliest

8000cmExplanation:20x20=400400x20=8000cm

The pressure EXERTED on a surface by an object INCREASES as the WEIGHT of the object increases or the surface area of CONTACT DECREASES. Alternatively the pressure exerted decreases as the weight of the object decreases or the surface area of contact increases.

Frictional force occurs in direction opposite to motion.Hope it HELPS! Have a GOOD DAY! PLEASE mark as brainliest answer! :D

Even if we hopped aboard the space shuttle DISCOVERY, which can travel 5 miles a second, it WOULD TAKE us about 37,200 years to GO one light-year.

tion:A MOTORBOAT STARTING from rest on a lake ACCELERATES in a straight line at a CONSTANT rate of 3.0ms-2 for 8.0s.

WHEN CONNECTED IN PARALLEL > 1/R = 1/R (1) +1/R (2) THEREFORE R= 2 OHM WHEN CONNECTED IN SERIES > R = 1 OHM THEREFORE TOTAL RESISTANCE = 3 OHMExplanation:HOPE IT HELPS U PLEASE MAKE ME BRAINLIEST ....

d) all of these EXPLANATION:all of these is the answersmark me BRAINLIST

oduced , H=I2Rthere, tH5=I52R5=10⇒I5=510=2 . This is the CURRENT through resistor 5Ω.Voltage across  resistor 5Ω is V5=I5R5=2×5=52VAs RESISTORS (4,6) and 5 are in parallel, so potential across (4,6) is EQUAL to V5.As resistor 4 and 6 are in series so current through each resistor I4=I6=4+6V5=4+652=22Heat produce in resistor 4 per sec =I42R4=(22)2×(4)=2cal/sec

tion:6 MAI SECOND 7 mai thiird

iruses are a large family of viruses which may cause illness in animals or humans. In humans, several CORONAVIRUSES are known to cause respiratory infections ranging from the common cold to more severe diseases.COVID-19 is the infectious disease caused by the most recently discovered coronavirus (“CO” stands for corona; “VI” for virus; “19” the year in which it appeared). This new virus and disease were unknown before the outbreak began in Wuhan, China, in December 2019. The most common symptoms of COVID-19 are fever, tiredness, and dry cough. In more severe cases, infection can cause PNEUMONIA, severe acute respiratory syndrome and even death. Not yet. To date, there is no vaccine and no specific antiviral medicine to prevent or treat COVID-2019. However, those affected should receive care to relieve symptoms. People with serious illness should be hospitalized. Most patients recover thanks to supportive care. Possible vaccines and some specific DRUG treatments are under investigation. While we are still learning about how COVID-2019 affects people, older persons and persons with pre-existing medical conditions (such as high blood pressure, heart disease, lung disease, cancer or diabetes) APPEAR to develop serious illness more often than others.hope this may help you dear

u=0 (as the CAR STARTS from REST) v=30 t=10 m=1500 v=u +at 30=0+a×10 30=10a a=3 F=ma F=1500×3 4500N EXPLANATION:…

A vector is a quantity or phenomenon that has two independent properties: magnitude and direction. The term also DENOTES the mathematical or geometrical REPRESENTATION of such a quantity. Examples of vectors in NATURE are velocity, momentum, force, electromagnetic FIELDS, and WEIGHT.

N:-A train covers first 10 km with speed 2km/h and next 20 km with speed 5km/h. Calculate average speed and average velocity of the train.EXPLANATION:-So here total distance is=10 km +20 km So total distance =30 kmAnd here time is not given ,so we have to calculate the time USING the formula:-So here we have to calculate 2 times as TWO distance and two speed of the train is given.Let's say Time taken to COVER first distance be=and time taken to cover 2nd distance be=So let's calculate both the times:-Similarly Total time=5+4=9 hoursNow we know the total distance and total time ,let's apply it in FORMULAE So the average speed is 3.333 km/hr

Only for EDUCATION PURPOSE ID 72185 3063 00 PAS Jp3c1iExplanation:

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The UNIT of PRESSURE is C. N/m kg/ms²

Answer:Given parametersInitial velocity (U) = 0Final velocity (v) = 40 km/hv = 40 × (5/18)v = 11.1111 m/sTime (t) = 10 minutet = 60 X 10t = 600 sAcceleration (a) =?CONSIDER the formulav = u + at11.11 = 0 + a × 60011,11 = 600 aa = 11.11/600a = 0.0185 ms-2

(c) Its mass REMAINS the same, but weight remains the sameExplanation: Mass almost ALWAYS remains CONSTANT (of COURSE, there are exceptions), while weight changes with the gravity.\Hope it helps! Have a GOOD day! Please mark as brainliest answer! :D

ne to move 1μC of charge from one point to ANOTHER point on the surface of an equipotential surface LIKE conductor is ZERO.But why?Work DONE to move a charge is defined as the product of the magnitude of charge and the POTENTIAL difference through which it is moved.Now, in an equipotential surface , potential difference (i.e. ∆V) is zero.So, work done is 0 JOULES.

Answer: For a distance of 200km between Delhi and Agra, a train travelling at a speed of 50km/h for the first 100KM, the train must travel at 116.67 km/h for the next 100km so that the average speed for the whole journey is 70km/h.To find the average speed we need to use the relation:Average speed = Total distance TRAVELED/ Total time takenLet's now consider the conditions given in the question to find the required value.Explanation:Let's find the time taken by train to travel each part of the distance.For the first part:Distance = 100 kmSpeed = 50 km/hTime = Distance/Speed = 100/50 = 2 hFor the second part:Let the speed of the train be 's' km/hDistance = 100 kmTime = Distance/Speed = 100/sNow, as we KNOW that:Average speed = Total distance traveled/ Total time takenwhere, Average speed = 70 km/hTotal distance travelled = 200 kmTotal time taken = 2 + 100/sSubstituting these VALUES in the average speed equation, we get:Average speed = Total distance traveled/ Total time takenor, 70 = 200/ (2 + 100/s)or, 70 × (2 + 100/s) = 200or, 140 + 7000/s = 200or, 7000/s = 60or, s = 7000/60 = 116.67 km/hTherefore, the speed of the train must be 116.67 km/h.

tion:a) series connection is used b) If any one bulb fuses or burns out then circuit breaks and all bulbs STOP working. It takes more time to detect the FAULTY bulb and replace it.c) current remains SAMED) No, because (i) if one stop working the other will also stop working (II) Both require different currents for their EFFECTIVE working. but in series connection same current flows.

There are two MAIN CATEGORIES (or sources) of proteins – animal and PLANT based. Animal proteins include: WHEY (DAIRY) Casein (dairyExplanation:Nikuuu~

Be repulsive​

so what ANSWER we should GIVE EXPLANATION:YES or No

option C SURFACE R is the answerExplanation:this the CORRECT answer

tion:LINK is present BECOZ it helps to stop the back flow of mercury.It is easy to MEASURE the TEMPERATURE n it helps to find the accurate temperature.Dont hold the thermometer by the bulb while reading it n thermometer should be washed before and after use, preferably with an antiseptic solution.

Substances which allows HEAT to pa.ss through them easily are KNOWN as Conductors. Substances which don't allow heat to pa.ss through them easily are known as Insulators.Explanation:

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A-(III) B-(IV) C- (i) D-(II)

Explanation:The TIME of departure of a train is at 23:18 HRS. The corresponding time in 12 HR FORMAT WOULD be: *​

(a) TRUE (B) FALSETHIS is the CORRECT ANSWER

x is exert more PRESSURE than y because X has LESS SURFACE area

ᴰᵃʳᴋ᭄ꮯꮎᏼꭱꭺ࿐a2 + 2AB + b2MTHS