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Akhil Kamat asked a question
Subject: Physics, asked on on 17/4/17
Two particles of mass m1 and m2 in projectile motion have velocities v1 and v2 respectively at time t=0. They collide at timet0Their velocities become v1' and v2' at time 2t0 while still moving in air. The value of mod (m1v1'+m2v2') -(m1v1+m2v2) is
Abhishek Paul asked a question
Subject: Physics, asked on on 24/5/17
Q. Two plane mirrors are parallel to each other and spaced 20 cm apart. An object is kept in between them at 15 cm from  A. Out of the following at which point(s) image(s) is/are not formed in mirror A (distance measured from mirror A) :


(A) 15 cm               (B) 25cm                    (C) 45 cm                           (D) 55 cm
Amartya Mitra asked a question
Subject: Physics, asked on on 9/9/17
a body of mass m is projected from ground with speed u at an angle theta with horizontal. the power delivered by gravity to it at half of maximum height from ground is
Akhil Kamat asked a question
Subject: Physics, asked on on 17/4/17
A body is moved along a straight line bya machine delivering a constant power. The distance moved by the body in time t is proportional to
a)t1/2  b)t3/4  c)t3/2  d)t2
Keerthi Vasan asked a question
Subject: Physics, asked on on 14/2/17
If a body of mass 3 kg is dropped from the top of a tower of height 25m. Then its kinetic energy after 3 sec is .. don't give any links. pls solve
Ankita Gaur asked a question
Subject: Physics, asked on on 11/1/16
A large mass 'M' moving with a velocity 'v' collides head-on with a very small mass 'm' at rest. If the collision is elastic, obtain an expression for the energy lost by the large mass M (take M+m=M)
Atharva Gorule asked a question
Subject: Physics, asked on on 24/9/17
Water falls down a 500.0  m shaft to reach a turbine which generates electricity.How much water must fall per second in order to generate 1x10 9 watts of power?(Assume 50% efficiency of conversion and g = 10 m/s2 )​
Laiba asked a question
Subject: Physics, asked on on 7/4/18
A 0.5 kg ball is thrown up with an initial speed 14 m /s and reaches a maximum height of 8 m . How much energy is dissipated by air drag acting on the ball during the ascent ? Ans is 9.8
Davinder Singh asked a question
Subject: Physics, asked on on 15/3/17
State the law of equipartition of energy. Show that the ratio of specific heat at constant pressure to specific heat at constant volume is 7/5 for a rigid diatomic molecule.
A Pal asked a question
Subject: Physics, asked on on 23/1/17
Derive an expression for the kinetic energy of a body of mass (m) rotating uniformly about a given axis. Show that the rotational kinetic energy = 1/2M (L/K)^2 Where symbols have their usual meanings.
Ketul asked a question
Subject: Physics, asked on on 22/8/17
A car starts from rest and moves on a surface in which the coefficients of friction between the road and the tyres increases linearly with distance(x). The car moves with maximum possible acceleration. The kinetic energy of the car will depend on x as
Srashta Vani asked a question
Subject: Physics, asked on on 12/11/16
A stone of mass 1 Kg is tied to a light inextensible string of length 10/3 m, whirling in a circular path in a vertical plane. If the minimum speed of stone is 10m/s, the ratio of maximum to minimum tension in the string is
Akhil Kamat asked a question
Subject: Physics, asked on on 17/4/17
A tennis ball is released from height h above ground level. If the ball makes inelastic collision with the ground, to what height will it rise after third collision
Ketul asked a question
Subject: Physics, asked on on 23/8/17
A rod of mass m and length l is made to stand at an angle of 60 degree with the vertical. Potential energy of the rod in this position is
Abhishek Paul asked a question
Subject: Physics, asked on on 24/5/17
4.  A rectangular loop of dimensions a and b carrying current l is shown in figure. The magnetic field at the centre O is

                          

(1)     2μolπr a2 +b2ab⊗          (2)   2μolπr a2 +b2ab⊙(3)   μol2πr. a2 + b2ab⊗            (4)   μol2πr. a2 + b2ab⊙

What is r?
Akhil Kamat asked a question
Subject: Physics, asked on on 17/4/17
A bullet of mass m moving with velocity v strikes a block of mass M at rest and gets embeded into it. The kinetic energy of the composite block will be,
Rutika Vitthal Marne. asked a question
Subject: Physics, asked on on 14/11/16
A device consist of a smooth L -shaped rod located in horizontal plane and a sleeve A of mass m attached by a weightless spring to a point B the spring length  is l and stiffness is equal to k the whole system rotates with constant angular speed w about a vertical axis passing through O . find elongation of spring . how is the result affected by the rotation direction
 
Janhavi Shedge asked a question
Subject: Physics, asked on on 11/11/17
two blocks of masses m and 3m are connected by a spring of force constant k and placed on a horizontal frictionless surface.the spring is stretched by an amount X and released. the relative velocity of the blocks when the spring is at its natural length is given by A 2x√(k/m) B 2x √(k/3m)
Akhil Kamat asked a question
Subject: Physics, asked on on 17/4/17
A particle of mass m is moving on a horizontal circle of radius r under a centripetal forceequal to -K/r2  where K is constant. The total energy of the particle is
a) K/2r  b) -K/2r  c) -K/r  d) K/r
Abhishek Paul asked a question
Subject: Physics, asked on on 27/4/17
Question-​
Rutika Vitthal Marne. asked a question
Subject: Physics, asked on on 4/5/17
​Q. above
Arundhati Santosh asked a question
Subject: Physics, asked on on 16/8/17
state a condition where a force does no work​
Shreyas asked a question
Subject: Physics, asked on on 8/8/17
A mass of 'm' is lowerd with the help of a rope of negligable mass through a distance 'd' with an acceleration of g/3 .work done by the rope on the block is.
Abhishek Paul asked a question
Subject: Physics, asked on on 11/4/17
Q. A projectile is thrown with an initial velocity ( 3ǐ + aĵ) m/s. If range of projectile is doubled, the maximum height is reached by it, value of a is 
(1) 1.5 m/s                                     (2) 6 m/s
(3) 3 m/s                                        (4) 12 m/s

 
Abhishek Paul asked a question
Subject: Physics, asked on on 1/5/17
Please explain in detail.
Janhavi Shedge asked a question
Subject: Physics, asked on on 6/10/17
During a baseball game, the pitcher throws the ball with a speed of 30 m/s. The mass of the ball is 0.15 g. What is the kinetic energy of the ball when it leaves the hand?
Rutika Vitthal Marne. asked a question
Subject: Physics, asked on on 12/3/17
​q.no.19
Sarvesh Rane asked a question
Subject: Physics, asked on on 30/4/17
An engine generates a power of 10kw in how much time will it raise a mass of 800 lg by 10m? (g=10ms)
Abhishek Paul asked a question
Subject: Physics, asked on on 19/4/17
Question-​
Abhishek Paul asked a question
Subject: Physics, asked on on 10/5/17
Question-
Abhishek Paul asked a question
Subject: Physics, asked on on 15/5/17
Question-​
Abhishek Paul asked a question
Subject: Physics, asked on on 24/4/17
Question-​
Abhishek Paul asked a question
Subject: Physics, asked on on 13/5/17
Question-
Rutika Vitthal Marne. asked a question
Subject: Physics, asked on on 31/1/17
​Q.11
Abhishek Paul asked a question
Subject: Physics, asked on on 10/5/17
Question-​
Abhishek Paul asked a question
Subject: Physics, asked on on 22/4/17
Question-​
Abhishek Paul asked a question
Subject: Physics, asked on on 18/4/17
Please explain option (2) in  detail.​
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