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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is light ? Mention its nature .Answer:- Light is an eletromagnetic radiation, which produces the sensation of sight in our eyes. –›Normally, light has a wave nature. |
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Answer» Answer: LIGHT is an eletromagnetic RADIATION, which PRODUCES the sensation of sight in our eyes. |
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| 2. |
Attempt0-20 Show that only odd harronics are present as overtones in the case ofan air column vibrating in a pipe closed at one end. An air column in apipe closed at one end is in resonance with the vibrating body of frequency 264 Hz. ( speed of sound = 330 m/s). Find The length of theair column |
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Answer» Answer: y saru Acharya SHRI vidyasagar Ji MAHARAJ KE BHAKT ke liye the following |
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| 3. |
Define dynamic........haye mein marjawaan.. |
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Answer» DYNAMIC is defined as energetic or forceful. An example of dynamic is a PERSONALITY that seems to have BOUNDLESS ENERGY. |
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| 4. |
2. Position vector= r = (4t2 +t?)i + (3t4 + 2 + 8)j +(2t2)k. Find velocity v, acceleration a,P=momentum, Force=F |
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| 5. |
Q-18Find the magnetization of a bar magnet of length 5 cm and cross-sectional area 2cm?, if the magnetic moment is 1 Am..inahan |
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Answer» MNET= 1 Am I= 5cm= 5*10−2m AREA of cross section= 2 CM2 = 2*10-4m2 magnetization= V= 5*10-2*2*10-4 v= 10*10-5m3 magnitisation= 1/10-5 =10 RAISE to power 5 A/M
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| 6. |
I have 3 questions kindly tell me their accurate answers. Its urgent.1-You are given an unmarked magnetized steel bar and a bar magnet, its north and south ends are marked N and S respectively. State how you would determine the polarity at each end of unmarked bar?2-When a straight current carrying conductor is placed in a magnetic field, it experiences a force. state the rule by which the direction of this force can be found out.3- State that a current carrying coil in a magnet field experience a tourque.Anyone who will just write answers for gaining points I will report him/her. |
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Answer» Answer: 1. At first I will be hung this magnet. That side of the magnet will GO to North,this side will be North POLE and it's opposite side will be South pole. 2. The Maxwell right-hand thumb rule indicates the DIRECTION of the magnetic field in a direction of the current. 3. A current-carrying coil in a magnetic field experiences a TORQUE that is 75% of the maximum POSSIBLE torque. |
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| 7. |
Three coils are connected in delta to a 30,3 wire, 415 V, 50 Hz supply and take a linecurrent of 5 A, 0.8 p.f lagging. Calculate theresistance and inductance of the coils.R=90 0, L = 0.3 HR=115.03 Q. L=0.274 HR=40 0, L = 0.3 HR=2000, L = 0.623 H |
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Answer» Answer: Three coils are connected in delta to a 30, 3 wire, 415 V, 50 Hz supply and TAKE a line current of 5 A, 0.8 p.f LAGGING. Calculate the resistance and inductance of the coils. R=90 0, L = 0.3 H R=115.03 Q. L=0.274 H R=40 0, L = 0.3 H R=2000, L = 0.623 H |
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| 8. |
Fundamental frequency of an open organ pipe is 250 Hz. What will be the fundamental frequency ofa closed organ pipe of same length. |
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Answer» The FUNDAMENTAL frequency of open organ pipe is 250 HZ . THIRD harmonic of closed organ pipe is equal to SECOND harmonics of open organ pipe.. |
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| 9. |
1(क) एक वैद्युत क्षेत्र विक्षेपित कर सकता है-(i) एक्स किरणों को(ii) न्यूट्रॉनों को(ii) ऐल्फा कणों को(iv) गामा किरणों को।C |
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Answer» Answer: Explanation: 3 |
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| 10. |
A person is standing in the middle of mountain and barometer shows a reading of 65 cm,(a) what is the use of barometer(b) what will be this reading of barometer at the top of the mountain?[65cm , above 65 , below 65 ] (c) justify your answer? |
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Answer» ksc-wphe-zps SEE MALE REPRODUCTION ORGAN here |
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| 11. |
Read the following and answer any four questions from 19 (i) to 19 (v)Balanced Forces when act on a body, the body either continues the state of rest or Uniform motion. Unbalanced force may change the state of an object and produces acceleration. A property called inertia is the inherent property of an object which resists any change in the state of the body when force is applied. Mass of an object is measure of inertia. 1x 4 19 (i) An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force is acting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton jiobject in figure is (A) zero (B) 2N right side of the body (C) 2N left side of the body (D) None |
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Answer» B..zero |
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| 12. |
पहले प्रकाश की गति को किसने मापा था?A. मार्क आरोसोंनB. ओ लॉस रोमर C. एडविन हबलD. टाइको ब्राहे1 follow+10 ❤= 30 ❤ |
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Answer» D is your answer hope it HELPS |
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| 13. |
What are phases of moon ????I'm also fine unniePlease can u tell me how to give this colourful answer... xD |
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Answer»
The LUNAR phase or Moon phase is the shape of the Moon's directly sunlit portion as viewed from Earth. The lunar phases gradually change over a SYNODIC month (about 29.53 DAYS) as the Moon's orbital POSITIONS around Earth and Earth around the SUN shift. The visible side of the moon is variously sunlit, depending on the position of the Moon in its orbit.
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| 14. |
A circle mirror produces an image of magnification -1 on a screen placed at a distance of 50 cm from the mirror.(a) write the type of mirror.(b) find the distance of the image from the object.(c) what is the focal length of the mirror.(d) draw the row diagram to show the image formation in this case. |
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Answer» Answer: (a) It is a converging mirror, or CONCAVE mirror. (b) 0 cm (c) 50 cm (d) (in attached image) Explanation: As the MAGNIFICATION is in ‘-‘ (negative) it is a concave mirror, and as the magnification is 1, the image size = the OBJECT size, or the object is placed at the centre of curvature. |
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| 15. |
एक ही पदार्थ की दो छड़ों की लम्बाई का अनुपात 2 : 3 तथात्रिज्या का अनुपात 1 : 2 हैं। यदि छड़ों के सिरों के तापान्तरसमान हों तो स्थायी अवस्था में छड़ों में प्रति सेकण्ड प्रवाहितउष्मा का अनुपात होगा :- |
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Answer» ANSWER:आई डोंट नो दिस आंसर टू दिस क्वेश्चन |
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| 16. |
11. According to second law of motion .F is defined asa)dv^-1/dt. b)ds^-1/dt c)da^-1/dt d)dp^-1/dt |
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Answer» Answer: 4 th OPTION is correct. F= dp^-1/dt Explanation: F=ma (for constant acceleration) F=m dv/dt. (a =dv/dt) {for variable acceleration } F=dp/dt. ( momentum p =mv or MDV[for small VELOCITY] ) F=dp^-1/dt |
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| 17. |
The same physical characteristic can bemeasured by all the units except:a) Gramb) Slugc) Poundd) Kilogram |
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Answer» The answer is slug Please MARK it as the BRAINLIEST |
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| 18. |
Rhythmicactivitiesincludesaerobics,zumbarhythmicgymnastics.true or false |
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Answer» TRUE rithmic ACTIVITIES invlove them |
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| 19. |
Which vaccination is given for protection against poliomyelitis ( polio)?(A) B.C.G. (B)O.P.Vbb (C)T.T. (D)D.P.T. |
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Answer» Answer: B) o. p. v Explanation: There are TWO vaccines for polio: the Oral Polio Vaccine (OPV) and the Inactivated Polio Vaccine (IPV). OPV is taken orally as drops and can be easily administered. It does not require a TRAINED health worker. OPV is STILL the MAIN preventive measure against polio. I hope this will help you✌ |
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| 20. |
A student determines the focal length of a device 'X' by focusing the image of a distant object ona screen placed 20 cm from the device on the same side as the object. The device 'X' is(a) Concave lens of focal length 10 cm(b) Convex lens of focal length 20 cm(c) Concave mirror of focal length 10 cm(d) Concave mirror of focal length 20 cm |
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Answer» Answer: option d there is a trick for this question that is WHENEVER DISTANT object given assume that light is coming from infinity so rays from infinity meets at focus so screen is placed at focus hence FOCAL LENGHT would be 20cm |
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| 21. |
Bhuvi jogs a circular ground ofdiameter 14 km..Find the distance anddisplacement covered by her ina. 3 roundsb. 2 1/2 roundsc 4 1/4 roundsd. 1 3/4 rounds |
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Answer» Given:- Bhuvi jogs a circular ground of diameter 14 km To Find:- the distance and DISPLACEMENT covered by her in a. 3 rounds b. 2 1/2 rounds c 4 1/4 rounds d. 1 3/4 rounds Solution:- Radius (r) = diameter/2 = 14/2 = 7 km a. 3 rounds- Distance covered in 1 round = 2πr = 2x22/7x7 = 44 km Distance covered in 3 rounds = 3 x 44 = 132 km Displacement is the shortest distance between the initial and the final position Displacement covered in 3 rounds = 0 (Since the initial position coincides with the final position) b. 2 1/2 rounds Distance covered = 2.5 x distance covered in 1 round = 2.5 x 44 = 110 km In 2.5 rounds, Bhuvi will REACH the other END of the semicircular path ⇒ Displacement =2r = 14 km Hence the distance and displacement covered at the end of 21/2 rounds is 110 km and 14 km respectively. c. 4 1/4 rounds- Distance covered = (4 x distance covered in 1 round + 1/4 x distance covered in one round) = (4x44 + 1/4 x 44) =187 km Displacement covered = hence, the distance and displacement covered at the end of 4 1/4 rounds is 187 km and 7 d. 1 3/4 rounds Distance covered = (Distance covered in one round + 3/4x distance covered in one round) = (44+ 33) = 77km Displacement covered = Hence, the distance and displacement covered at the end of 1 3/4 rounds is 77 km and 7 |
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| 22. |
Plz answer this questionA train moving with uniform speed covers a distance of 120m in 2seconds. Calculate the speed of the train and time taken to cover a distance of 240 m |
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Answer» Answer: |
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| 23. |
In a square field with side 100m a person completes exactly 5 revolution. Calculate displacement.PLEASE ANSWER IT FAST |
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Answer» The MAXIMUM displacement is the DIAGONAL of the SQUARE field. side of square = 100m diagonal = √100² + 100² = √20000 = 100√2 m = 141.42m So maximum displacement is 141.42m. Hope it helps.Pls mark this brainliest |
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| 24. |
Who said these words ''Be faithful in small things because it is in them that your strength lies''?please tell answer |
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Answer» Answer: LUKE 16:10 PLZ REPORT and delete my QUESTION THANKS above is your answer |
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| 25. |
1. At a particular point, electric field depends upon(a) source charge only (b) test charge qo only (c) both Q and 902. The SI unit of electric field intensity is(6) N/C(a) N(c) C/m2(d) N/m2 |
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Answer» a. The STRENGTH of the electric field depends on the source charge, not on the test charge. ... ... The direction of the FORCE that is exerted on a NEGATIVE charge is opposite that which is exerted on a positive charge. b . volts per meter. (V/m). |
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| 26. |
When a ball is thrown vertically upwards, it goesthrough a distance of 19.6 m. Find the initial velocity of the ball and the timelaken by it to rise to the highest point. (Acceleration due to gravity,= 9.8 m/s2) |
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Answer» When a ball is THROWN vertically upwards, it goes through a distance of 19.6 m. Find the INITIAL velocity of the ball and the time Taken by it to rise to the highest point. (Acceleration due to gravity, = 9.8 m/s²) Here , the ball is going up against the attraction of Earth, so it's velocity is decreasing continuosly . In other words we can say that the ball is being retarded . THUS the acceleration in the ball is negative which means that the value of g is to be used here with negative sign. Here, Now , putting all these values in the formula :- We get , Thus the velocity of the ball is 19.6 m/s which means that the ball has been thrown upwards With a velocity of 1o.6 m/s Let us now calculate the time taken by the ball to reach the highest point. Now , the initial velocity, the final velocity and the acceleration due to gravity, so the time taken can be calculated by using the equation :
So putting the values in the above equation. we get, Thus the ball TAKES 2 SECONDS to reach the highest point of its upward journey. ______________________________ Note :-
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| 27. |
When the distance between the object and the plane mirror increases(A) the image remains same.(B) the size of the image will become less than the size of the object.(C) the distance between the image and the plane mirror increases.(D) the distance between the image and the plane mirror decreases. |
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Answer» In plane MIRROR, the IMAGE DISTANCE always equals the object distance. Therefore, when the distance between object and the plane mirror INCREASES then the distance between the image and the plane mirror also increases Explanation: hope this is right |
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| 28. |
A ball is dropped from a height. If it takes 0.2 s to cross the last 6.0 m before hitting theground, find the height from which it was dropped |
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| 29. |
A man sitting on a chair looks into a plane mirror that is 2.5 m away fromhim. He sees the image of a chart that faces the mirror and is 0.5 m behindhim. How far away from him does the image of chart appear to be?(A) 6.5 m(B) 5.5 m(C) 7.5 m(D) 3.5 m |
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Answer» (A) 6.5 m Explanation: The plane mirror is 2.5m away from him and the chart is 0.5 m far BEHIND him so the distance from the chart to the plane mirror is 2.5 m + 0.5 m = 3 m And the distance from the chart to the man in the plane mirror is 3 m + 3 m + 0.5 m = 6.5 m. We TOOK 3 m + 3 m bcoz we are also CALCULATING the distance of the chart in the mirror, so we doubled up the distance. Thank you :) |
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| 30. |
A 8000 kg engine pulls a 5 wagons, each of 2000 kg, along a horizontal track. If the engine exerts a force of 40000 N and the tracks offers friction force of 5000 N, Then calculate ;(a) The Net Accelerating force and(b) The Acceleration of the Train.Warning For Spammers!☠️☠️☠️☠️☠️☠️☠️☠️☠️No Spam!Spammers Get Away!Quality Answer Needed! |
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Answer» GIVEN : Mass of engine M=8000 kg Mass of each wagon m=2000 kg Frictional force acting in backward direction f=5000 N (a) : The net force acting on the train F ′ =F−f=40000−5000=35000 N (b) : LET the acceleration of the train be a ∴ F ′ =(5m+M)a 35000=(5×2000+8000)a ⟹a=1.944 ms −2
(C) : External force is applied directly to wagon 1 only. The net force on the last four wagons is equal to the force applied by wagon 2 by wagon 1. Let the acceleration of the wagons be a ′
35000=(5m)a ′ ⟹35000=10000×a ′
Acceleration of the wagons a ′ =3.5 ms −2
Mass of last 4 wagons m ′ =4×2000 kg ∴ Net force on last 4 wagons F 1
=8000×3.5 =28000 N Thus force on wagon 2 by wagon 1 is 28000 N. |
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| 31. |
Paragraph:-Ranjit saw that the dog sitting by his side had suddenly become alert.In a short time, Ranjit heard footsteps of a man and the stranger,approached Ranjit now understood why the dog had suddenlybecome alertquestions:- 1) What is the difference between the audible range of soundfor Ranjit and the dog?2) Name some other animals that can hear sound of frequencynot audible to human beings. |
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Answer» first answer is dogs have good hearing Explanation: Because dogs can hear sound from long DISTANCE which is not audible to humans as because of HERTZ of sound a medium through which sound can be measured other animals which can hear sound of frequency are pigeons they can hear way above frequency than other animals they can also detect disaster coming .CATS can hear higher frequency than humans and other animals. |
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| 32. |
What is climate?Anybody here online....? |
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Answer» Answer: Climate is the average weather in a GIVEN area over a LONGER period of time. A description of a climate includes INFORMATION on, e.g. the average temperature in different SEASONS, rainfall, and sunshine. Also a description of the (chance of) extremes is often included. |
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| 33. |
A typical sprinter speeds up during the one-third of a race andslows gradually over the rest of the course. Is it accurate to say thata sprinter is accelerating as he slows during the final two-thirds ofthe race? |
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Answer» THIRD of a race and slows GRADUALLY over the rest of the COURSE. Is it ACCURATE to say that a sprinter is accelerating as he slows during the final two-thirds of the race? |
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| 34. |
7. If a magnet X attracts another metal piece then Y, then?A) Y is any metal except iron, cobalt and nickel.B) Y is may either be a magnet or an unmagnetised iron piece.C) Y is an unmagnetised material.D) Y is a magnet. |
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Answer» answer is C) Y is an Unmagnetised material Explanation: |
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| 35. |
Nearly two years after the release of the first photograph, scientists have shared new photos of the first-ever black hole.( I am not asking question l am just telling you the fact |
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Answer» this is so COOL what is this |
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| 36. |
What happens to the force between two objects, ifa)the mass of one object is doubled?b)the distance between the objects is doubled and tripled?c)the masses of both objects are doubled? |
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Answer» what TYPE of forces your are TALKING about, gravitational or any other PLEASE mention... |
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| 37. |
A certain man A does 450 J of work in 5 s and another man B does 240 J ofwork in 3 s.(a) Who has more power?(b) Find the ratio of the power delivered by A to that delivered by B. |
Answer» Answer:Let's understand about power first! It is common experience that different persons COMPLETE a given work in different times. A person doing work QUICKLY is said to be stronger but a person who does some work in a longer TIME is said to be weaker. In this context, we define the term power, which is a measure of rate of doing work. Power: The power of a person/machine/system is defined as its rate of doing work. If W work is done in the time t, then the power P is given as: ✭ Power, P = Work, W/ Time, t ✭Let's COME to question now... As we are provided with the work and time of both men A and B. We will find the power of both men A and B SEPARATELY and then compare them to find out who has more power. After that we will find out the ratio of their powers. Let's find out...✧ a.)➛ Work done by man A, W = 450 J ➛ Time taken, t = 5s ✭ Power, P = Work, W/ Time, t ✭ Putting the values in the formula, we have: ➛ P = 450/5 ➛ P = 90 W∴ Power of man A = 90 W ➛ Work done by man A, W = 240 J ➛ Time taken, t = 5s ✭ Power, P = Work, W/ Time, t ✭ Putting the values in the formula, we have: ➛ P = 240/3 ➛ P = 80 W∴ Power of man B = 80 W Comparing the powers of both we find that, 90 W > 80 W Power of man A > Power of man B ∴ Man A has more power. b.)➛ The ratio of the power delivered by A to that delivered by B = Power of man A/Power of man B ➛ The ratio of the power delivered by A to that delivered by B = 90/80 ➛ The ratio of the power delivered by A to that delivered by B = 9/8 ➛ The ratio of the power delivered by A to that delivered by B = 9:8 ∴ The ratio of the power delivered by A to that delivered by B is 9:8 _______________________________ |
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| 38. |
Find the odd one outi) Kidney , Urinary bladder, Bowman's Capsule , Urethra ii) Carbon dioxide , Sunlight , Ethanol , 2ATP iii) Scorpio , Ant , Mosquito , Butterfly iv) Motor neuron , Association neuron , Sensory neuron , Mixed neuron v) Horse , Snake , Cow , Goat vi) Leaves , Chloroplast , Roots , Chlorophyll |
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| 39. |
1. The refractive index of diamond is 2.42 and the refractive index of water is1.33 Then among diamond and water which is denser medium |
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Answer» Answer: Since the refractive INDEX of diamond is more, HENCE the SPEED of LIGHT is lesser in diamond. Let speed of light in water vevw and in diamond bevd. N = (Vwc) ÷ (Vdc) = Inverse Ratio of refractive index of water and diamond. n=2.421.33 = 1.82 (approx.) |
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| 40. |
Four persons jointly lift a 250 kg box to a height of 1 m and hold it.a) Calculate the work done by the persons in lifting the box.b) How much work is done for just holding the boxc) Why do they get tired while holding it ? (g= 10 m/s2) |
Answer» Answer:a.)✭ F = ma ✭ Where,
Putting the values in the formula, we have: ➥ F = 250 × 10 ➥ F = 2500 N Given: Displacement in the direction of force of lifting the box ( s ) = 1 m ✭ W = F × s Where,
Putting the values in the formula, we have: ➥ W = 2500 × 1 ➥ W = 2500 J∴ The work done by the persons in lifting the box = 2500 J b.)➥ Zero work is done for just holding the box. As there is no displacement while just holding the box, that is there is no distance covered between the initial and the final position, therefore there is no work done or in other words you can say that work done is zero. c.)➥ In order to hold the box men is applying a force against the gravity. The men are applying equal and OPPOSITE force to the gravitational force, which is acting on the box. So while applying the force, their muscles are are involved or you can say muscular EFFORT is involved, so they FEEL tired while holding the box. _______________________________ |
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| 41. |
A student is designing an investigation of the distribution of charges in conductors. She will use two conducting spheres mounted on insulating stands in the investigation. The conducting spheres are shown.The student wants to separate the charges of the spheres as shown.What should the student do in her investigation to produce these results?A.She should place a negatively charged rod near the left sphere.B. She should place two negatively charged rods near each sphere.C. She should place a positively charged rod near the left sphere.D. She should place two positively charged rods near each sphere. |
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Answer» yayyayaayayaaya same doubth Explanation: |
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| 42. |
A given wire of resistance 1 ohm is stretched to doubleits length. What will be its new resistance ? |
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Answer» Answer: 1 OHM because RESISTANCE not changes mark as BRILLIANT |
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| 43. |
Prove that the path of projectile isparabolic, when it is projected upwards making some angle withhorizontal. |
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Answer» ബഹ്ഹ്ഡ്ജ്ഡ്ജ്ഡ്ജ്ഫ് ഡിഗ്ഞ്ച്ഫ്ജഫ്ജ്ഡ്ജ്ഹ്ഫ് സ്സിബിസിബിബിസിജഫ്ജ്ഡ്ജ്സ് സസ്സ്ഹ്ഹഫ്തഹ്ഫഹ്ഹ്ഫ് സിജെജെസിജെസിജെച്ച് chcdhhshshs shshsgscsss സെഥ്സുസിജഫ്ൺഫ്ബ്ബേബിഷസ് |
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| 44. |
In a given system of units, 1 unit of mass = 2 kg, 1 unit of length = 5 m and 1 unit of time = 5 s. Then inthis system, 1 N represents5/2 units of force2/5 units of force2 units of force1/2 units of force |
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Answer» HOPE it's DEFINITELY USEFUL |
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| 45. |
Calculate gravitational force between a 10 kg ball and a 20 kg ball placed 10 m apart from eachother. (Given G = 6.67 x 10-11 Nm2 Kg -2PLEASE TELL FAST |
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Answer» F=6.67×10–¹¹ ×10×20/(10)² |
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| 46. |
A force of 2.5 N is experienced by a point ofcharge of 5 x 10-6 C at a point in an electricfield. The potential gradient at that point in SIunit is(A) 5 x 105 N/C (B) 5 x 10-5 V/m(C) - 5 x 105 N/C (D) – 5 x 10-5 V/m |
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Answer» ODHF NG futjtggbfjfu4itudrrgyttbaL ka L pa up pa SI Al Al hale Al atop |
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| 47. |
பயிற்சி வினாக்கள்5(a)25(6)11(c)511(d)254. 2x10 NC மதிப்புள்ள மின்புலத்தில் 30ஒருங்கமைப்பு கோணத்தில் மின் இருமுனைஒன்றுவைக்கப்பட்டுள்ளது அதன்மீதுசெயல்படும் திருப்புவிசையின் மதிப்பு 8 Nm.மின் இருமுனையின் நீளம் 1m எனில்அதிலுள்ள ஒரு மின்துகளின் மின்னூட்டஎண்மதிப்பு(a)4 mc(b)8mCI(c)5mCI(d) 7mCI5. மின்துகள்களை உள்ளடக்கியநான்குகாஸியன் பரப்புகள் படத்தில் காட்டப்பட்டுள்ளன.ஒவ்வொரு காஸியன் பரப்பையும் கடக்கும்மின்பாய மதிப்புகளை தரவரிசையில் எழுதுக.+29 |
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Answer» I DONOT understand your LANGUAGE PLEASE write in english or hindi |
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| 48. |
In this graph, time is represented along the x-axis and the velocity is represented along the y-axis.The product of velocity and time give displacement of an object moving with uniform velocity. The area encby velocity-time graph and the time axis will be equal to the magnitude of the displacement.If a body moves with a constant velocity then velocity time graph for this body would be straight line paralltime axis as shown below in the figureB.A АQVelocityVelocityRTimeTimeArea under speed time graph is known asaccelerationii- distance 111- displacementiv noneb. Which graph shows uniformly accelerated motion A or B?1-Aii-Biii- in A and B bothiv- noneUniform circular motion isi-Uniform motion ii-accelerated motioniii- free fall* Slope of V-T graph is1- acceleration ii-speed11- velocitye If speed of an object changes from 36 km/hr to 54 km/hr in 10 sec than acceleration isi-5 ms? 11-0.5 m/s2ii-0.005 m/s2 iv - noneMathematicall, varess the acceleration due to gravity in terms of meiv- noneiv- none[ |
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Answer» which STANDARD are you first GET me that answer then I'll give you and and the FOLLOWING |
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| 49. |
In v is equal to a into tplis bv is a velocity andb is tim. The dimensional formulaofa:bin- عوا للنلبي طلع |
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Answer» V is DENOTED by ACCELERATION DUE to GRAVITY |
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| 50. |
Q23. A Bullet flying with a velocity of50ms-1 hits 'a block of wood andpenetrates through a distance of 0.2m before coming to rest. The Mass ofthe bullet is 0.03kg. Calculate theresistance offered by the block ofwood. |
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Answer» Initial velocity, u=50 ms −1
Distance TRAVELLED, s = 0.2 FINAL velocity v = 0 Mass of the bullet, m = 0.03 KG From the equation, v 2 =u 2 +2as 0=50 2 +2×a×0.2 a=− 0.4 2500
=−6250 ms −2
∴ The resistance OFFERED by the wood is F=ma=0.03×6250=187.5N. Explanation: hope this helps you :) |
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