Physics question and answers for May 29, 2024
- Q Physics students launch a ball straight up and observe the ball as it returns to the same height. They determine the ball has 80 J of kinetic energy when launched,...
- Q A large cruise ship of mass 6.00 x 107 kg has a speed of 12.8 m/s at some instant.(a) What is the ship's kinetic energy at this time?(b) How much...
- Q A pitcher claims he can throw a 0.148-kg baseball with as much momentum as a 2.02-g bullet moving with a speed of 1.50 x 10 m/s.(a) What must the baseball's...
- Q A projectile of mass m is fired horizontally with an initial speed of vo from a height of h above a flat, desert surface. Neglecting air friction, at the instant...
- Q 31 A disc of mass m and radius R is rolling with angular speed on a horizontal surface as shown in figure The magnitude of angular momentum of the disc...
- Q A cue ball traveling at 7 39 m s makes a glancing elastic collision with a target ball of equal mass that is initially at rest The cue ball is...
- Q Comprehension IV Two blocks A and B of masses 3 m and 2 m respectively are placed as shown in figure A 3 mmmmmmm Smooth Choose the correct answer 1...
- Q 0 A bullet of mass m is fired from below into a bob of mass m of a long simple pendulum The bullet stays inside the bob and the bob...
- Q A bag of mass M hangs by a long thread and a bullet mass m comes horizontally with velocity v and get caught in the bag Then for the combined...
- Q One quarter sector is cut from a uniform circular disc of radius R This sector has mass M It is made to rotate about a line perpendicular to its plane...
- Q An explosion blows a rock into three parts Two pieces fly off at right angles to each other 1 kg with velocity of 12 m s and 2 kg with...
- Q Three rigid rods are joined to form an equilateral triangle The two corners A 3 and B are pivoted and this assembly is kept in a vertical plane If M...
- Q 13 The surface mass density mass per unit area of a semi circular disc of radius R varies as t ax 7 where a is a constant vector along positive...
- Q A shell at rest at the origin explodes into three fragments of masses 1kg 2kg and m kg the 1kg and 2kg pieces fly off with speeds of 5ms along...
- Q The areal mass density of a circular disc of radius R is given as a Por where x is the distance from the centre and po is a constant Its...
- Q Two balls collide with each other and bounce as shown in the figure What is the final speed of the 700 g ball if the 900 g ball has a...
- Q Two discs A and B of mass m 2 kg each are connected by a light rod of length 1 m These discs are placed on a smooth horizontal 3...
- Q A ball of mass m moving with a velocity v v 2g1 1 is the length of the string the bob of a pendulum of the same mass at rest...
- Q 3 Consider a system of two particles having ma and m If the particle of mass m is pu m towards the centre of mass of particles thr a distance...
- Q If the linear density mass per unit length of a rod of length 3m is proportional to x where x is the distance from one end of the rod the...
- Q A solid sphere of radius R is placed on a smooth horizontal surface A horizontal force Fis applied at height h from the lowest point For the maximum acceleration of...
- Q If a mass m collides elastically with another identical mass at rest in oblique manner then after collision both the masses move at an angle of 1 30 2 45...
- Q Physics Sec 1 Maximum Marks 24 This section has 6 questions The answer to each question is a SINGLE DIGIT INTEGER ranging from 0 to 9 both inclusive Marking scheme...
- Q Pls solve the following question by energy method A plank having mass M rests on the two identical spherical balls of mass m and radius R The plank is connected...
- Q A geyser heats water flowing at the rate of 3 0 litres per minute from 27 C to 77 C If the geyser operates on a gas burner what is...
- Q B B 1 97 m s The system is initially at rest Block B has a mass of 4 kg The cart has mass of 10 kg The spring is...
- Q o 1 partial marks for selecting each correct option o 2 In case if selected typed option is incorrect o 0 In case if no response is typed selected A...
- Q Two particles P and Q initial at rest and 1 m apart P has a mass of 1 H and Q a mass of 3 kg P and Q repel...
- Q A circular plate of uniform thickness has a diameter 56 cm A circular portion of diameter 42 cm is removed from one edge as shown in the figure The centre...
- Q 28 A rocket has a mass of 20000 kg of which 16000 kg is fuel The rocket engine can exhaust fuel at the rate of 200 kg s with an...
- Q A particle of mass m and velocity u collides elastically with another particle of the same mass at rest in laboratory frame The scattering angle in the centre of mass...
- Q Four particles of masses 1kg 2kg 3kg and 4kg are at the vertices of a rectangle of sides a and bas shown Ifa 1m and b 2m What is the...
- Q M I of a thin rod of mass M and length about an axis through its centre is Me 12 Its M I about an axis passing through one end...
- Q 5 Rolling ball A semi cylindrical piece of radius R is cut out from a tile The tile is standing on a smooth frictionless horizontal surface see figure The tile...
- Q a other 4 20 The plane of a dip circle is set in the geographical meridian and the apparent dip angle is 0 It is then set in a vertical...
- Q Two particles of equal masses are moving with equal speeds at an angle 60 de Broglie wavelength of these particles is 2 Find de Brooglie wavelength of the particles in...
- Q A ball is thrown with a velocity of 6m s vertically downwards from a height H 3 2m above a horizontal floor If it rebounds back to same height then...
- Q A ball is allowed to slide a distance 1 from rest down a smooth inclined plane having inclination of 30 with the horizontal The ball impringes on a fixed smooth...
- Q A uniform chain of mass 4 kg and length 2 m is kept on table such that 3 4th of the chain hangs freely from the edge of the table...
- Q Illustrated below is a uniform solid cubical block of mass M and side a Mark the correct statements D a M C A RI C A The moment of inertia...
- Q Question 15 An isolated particle of mass m is moving in a horizontal plane x y along the x axis at acertain height above the ground It suddenly explodes into...
- Q 21 1 19 A body of mass 1 kg initially at rest explodes and breaks into three fragments of masses in the ratio 1 1 3 The two pieces of...
- Q Two train A B are running in same direction on parallel rails such that A is faster than B packets of equal weight are transferred between them What will happen...
- Q 3 Three identical spheres each of mass 1 kg are placed touching one another with their centres in a straight line Their centres are marked as A B C respectively...
- Q 17 Santi 50 kg and Banti 60 kg are sitting at the two extremes of a 4 m long boat 40 kg standing still in water To iscuss a mechanics...
- Q 9 3 50 W If two bulbs of power 60 W and 100 W respectively each rated 110 V are connected in series with the supply of 220 V then...
- Q Two particles are inter connected by an ideal spring see figure The spring is compressed and system is projected in air under gravity If the acceleration of m is find...
- Q The rebound coefficient between a tennis ball and a racket is defined as v v where v is the incoming speed of the ball and v he speed of the...
- Q Which of the following option s is are correct A Centre of gravity for triangular lamina is situated at point of intersection of medians B Centre of gravity for circular...
- Q Marks ve Marks 1 If wrong option is selected A of mass 3kg moving with a speed 2m s collides elastically with a stationary block B of mass 4kg The...
- Q 15 A sphere of radius R carries charge density p such that p kr where k is positive constant and ris distance from centre Find the magnitude of electric field...
- Q he force F acting on a particle of mass m is show force time graph The change in momentum of th article over the time interval from t 0 tot...
- Q A block of the mass of 1 kg is moving on the x axis A force F acting on the block is shown The velocity of the block at time...
- Q Threads of length h h h are fastened to the vertices of a homogeneous triangular plate of weight W The other ends of the threads are fastened to a common...
- Q A particle of mass 4kg moving with a speed of 10m s collides with a train moving in an opposite direction with a speed of 20m s If coefficient of...
- Q A rod of length R and mass M is free to rotate about a horizontal axis passing through hinge P as in figure First it is taken aside such that...
- Q Consider a uniform thin hemispherical shell of mass M and radius R What is it s moment of inertia about an axis passing through top most point and a periphery...
- Q A uniform disc of radius R and mass M is spun to an angular velocity wo in its plane about its centre and then placed on a rough horizontal surface...
- Q A rod of length L is hinged from one end It is brought to the horizontal position and released The angular velocity of the rod when it is in the...
- Q A ball is hanging from a thread of length 5m A bullet of mass 100 gm travelling horizontally with a speed of 100 m s strikes the ball elastically and...
- Q Q5 A plane electromagnetic wave of wave intensity 6 W m strikes a small mirror of area 39 cm held perpendicular to the approaching wave The momentum transferred in kg...
- Q A thermometer of mass m is filled with mercury of mass m2 and placed in a gravity free space without touching anything As temperature rises mercury expands and ascend in...
- Q A child is standing at one end of a long trolley moving with a speed v on a smooth horizontal track If the child starts running towards the other end...
- Q A 5 75 kg steel ball has an initial velocity of 6 34 300 meters per econd The ball collides with and imbeds itself in a 3 85 kg block...
- Q 16 A cylindrical pipe of radius R and mass M is placed vertically on a horizontal floor Two identical spheres each of radius r and mass m are inserted in...
- Q If a semicircular ring of mass M and radius R is tied with string at one end and is free to rotate about hinge on other end Find tension in...
- Q Q Look at the drawing given in the figure which has been drawn with ink of uniform line thickness The mass of ink used to draw each of the two...
- Q Find the center of mass and inertia tensor for rotations about the center of mass of a prism which base is a rectangle 20 cm for 4 cm and its...
- Q The ballistic pendulum is a simple device to measure projectile velocity v by observing the maximum angle to which the box of sand with embedded projectile swings What is the...
- Q al me Question 1 The centre of mass of a system of particles does not depend upon a position of particles b relative distance between particles c masses of particles...
- Q A 1000 kg rocket is fired from the surface of earth so that its exhaust speed is 1000 m s relative to rocket If initial acceleration of the rocket is...
- Q A stationary bomb of mass 10 kg explodes into two pieces of masses 4 kg and 6 kg If the magnitude of velocity of mass 6 kg is 10 m...
- Q Elon Mask the astronaut has a total mass of 57 1 kg While in space he throws a 3 23 kg tool away from him at a speed of 3...
- Q If the linear density of a rod of length L varies as A Bx where A and B are constant The separation of the centre of mass from one end...
- Q 5 Three girls Shivangi Radhika and Saili sat o one side of see saw at distances of 1m 1 2m an 1 5m from the fulcrum that is situated at...
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